JP2001133625A - Light filter sheet and light filter spectacles for reading capable of preventing and treating ametropia - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light filter sheet, plate, film and lens for hanging type light filter spectacles, capable of preventing and treating myopia and hyperopia. SOLUTION: Myopia and hyperopia are respectively prevented and treated by using the transparent light filter sheet or light filter spectacles or light filter spectacles lenses which mainly turn blue, green or blue and is capable of partially or fully filtering and removing light of long wavelengths or the transparent light filter sheet or light filter spectacles or light filter spectacle lenses, which mainly turn red and is capable of partially or fully filtering and removing light of relatively short wavelengths.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light filter sheet, a plate, and the like, which are used for preventing nearsightedness or hyperopia refractive error, treating them as an auxiliary treatment, and used during short-range visualization such as reading.
It covers film and light filter spectacles and hanging light filter spectacle lenses.

[0002]

BACKGROUND OF THE INVENTION Myopic refractive errors are caused and exacerbated by prolonged and prolonged use of the eye at short distances. Overuse of eyes, especially during study and reading, is a major cause of the already low high myopia rate, especially during youth.
At present, there are not many ways to prevent or treat myopia that can be used during reading. Above all, it prevents the occurrence and deterioration of myopia,
A method for treating myopia under certain conditions is disclosed in Chinese Patent Application No. 89219609 (Authorized Publication No. 208110).
The health glasses proposed by 3) are relatively representative. This is an optical lens that has a constant refractive power to light, changes the direction of the light beam, reduces the need for adjustment, concentration and rotation of eyes when reading at close range, and reduces the load on the eyes to prevent myopia. Is what you do. For the last two years, double-focused eyeglasses that have a certain effect in preventing readable myopia, which has been proven in international ophthalmological research, have adopted a similar principle, but merely reduce the accommodation demand therein. It just used the principle. However, the primary prophylactic or therapeutic effect of such glasses is often limited to placing the eyes in zero or negative accommodation when reading. As a result, the effect of using such glasses is affected by the distance of use and the state of use of the eyes, causing certain difficulties in practical applications. In the existing technology, there is no method that can prevent or treat hyperopia by using a light filter sheet or a light filter lens for reading. In addition, the existing technology is said to be able to treat certain diseases with light filter glasses with a certain color, but special light filters or light filters that can be used for reading to effectively prevent and treat myopia and hyperopia. I can't find my glasses. Chinese Patent Application 96102324
(Notification No. 1078558) proposed glasses with a red filter lens capable of treating myopia, but as this application pointed out later, red lens glasses not only can not treat myopia, but also the myopic process of the eye. Is to strengthen.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to prevent myopia without being affected by the reading distance or the refraction and accommodation of the user's eyes for use in short-range reading or other eye work. Or a light filter (filter sheet, plate, film) capable of assisting treatment, a light filter eyeglass or a hanging light filter lens capable of preventing or assisting myopia, and a light filter (filter sheet, plate, film) capable of preventing or assisting hyperopia Film) and light filter glasses or hung light filter lenses capable of preventing or assisting hyperopia.

[0004] The Applicant has, for many years, continued to relax in myopia research and has discovered that different spectral fractions in natural light can cause different refractive errors in the eye upon reading. For example, a case where a light wave having a spectrum of 560 millimicrons is focused on the eye retino,
Before focusing a light wave with a wavelength lower than 560 millimicrons on the retinal, the nature of the stimulus causes a refractive error in the hyperopic direction, but if a light wave with a wavelength higher than 560 millimicrons is focused on the retinal, the nature of the stimulus becomes Causes refractive error in the myopic direction. Under normal natural light conditions, when reading the material for reading black characters on a white fabric at a short distance, the center wavelength of the regulatory stimulus is about 580 to 590 millimicrons. In response to a modulating stimulus of wavelength light, the modulating response is on average 0.2-0.4 slower in refractive index. In this case, the wavelength is 560 or longer, especially 580, which is relatively long.
Light of millimeters or greater causes stronger myopic stimuli, whereas light of relatively short wavelengths of 560 or less, especially 540 millimeters or less, causes hyperopic stimulation.

[0005]

SUMMARY OF THE INVENTION The technical solution of the present invention is to read at the time of reading, including a transparent light filter sheet, a filter plate, a filter film, or a light filter lens which can be hung on light filter glasses or eyeglass frames. Using a transparent light filter that can be appropriately installed between the material and the eye, filter out a part or all of the light wave fraction having a relatively long wavelength,
When used during reading, it can prevent and assist (including treatment) myopia and myopic refractive errors caused by short-range reading. Based on similar ideas, including a light filter sheet, a filter plate, a filter film, or a light filter eyeglass or a hanging light filter lens that can be hung on an eyeglass frame, it can be appropriately placed between the reading material and the eyes at the time of reading. Use a transparent light filter to filter out some or all of the light wave fractions, each of which has a relatively short wavelength, which can also be used at the time of reading to prevent hyperopic refraction and provide adjuvant treatment (including treatment). .
Next, the technical solution of the present invention will be described one step deeper for the prevention and treatment of myopic refractive error and hyperopic refractive error.

[0006]

DETAILED DESCRIPTION OF THE INVENTION For the prevention or treatment of myopia during reading, the transparent light filter used is characterized by the fact that all or most of light having a relatively short wavelength is transmitted while light having a relatively long wavelength ( Here, a so-called non-transmitted light of a light filter is partially or entirely or entirely absorbed or reflected (ie, filtered), or has a relatively high transmittance relative to light having a relatively short wavelength.
It shows a relatively low transmittance relative to light having a relatively long wavelength, and the ratio of the two transmittances is about 1.5: 1 or more, for example, 2: 1, or 3: 1, or 4: 1, Alternatively, it can be higher, for example 8: 1. Generally, the higher the ratio, the higher the effect. The so-called relatively short wavelength is 59
At wavelengths below 0 micron, eg 580 or 56
It can be 0 or less, or 555 or less, or 550 or less, or 540 or less, or 535 to 500 millimicrons or less. The lower the transmitted wavelength, the lighter the conditioning stimulus of the eye, and a relatively large concentration leads to a facilitating effect on the regulation response, which is advantageous in reducing the regulation delay. However, at the same time, the lower the wavelength transmitted, the narrower the spectrum for stimulation modulation, and if too narrow, the greater the adjustment error based on the negative feedback mechanism of the eye, which offsets the enhancement of the concentration's regulatory response. I do. Therefore, based on the feature of the negative feedback mechanism of the eye, the upper limit value of the wavelength to be completely or partially transmitted is determined in consideration of the lighting conditions. Normally, the light filter has better passability at around 570 mm, but when used for reading, the effects of myopia prevention and adjuvant treatment are relatively normal. But the upper limit is 550 or 54
A value of 0, or 540 to 490 millimicrons, can increase the effect of treating myopia during reading to a certain extent, and even better for eyes with relatively strong accommodation. 49
At wavelengths shorter than 0 mm, the effect is significantly reduced. A so-called part, most, or all of a light wave having a relatively long wavelength to be absorbed or reflected has a lower limit of the wavelength corresponding to the upper limit wavelength of a shorter wavelength, respectively. For example, 570, 560, 555, 540, 53
5 to 500, or 540 to 490 mm, or around 590, or around 580, or 580 to 60
0, or 600-650 millimicrons. If it is higher than 650 millimicrons, the effect is significantly reduced. In particular, the characteristics of the light filter used for preventing or treating myopia during reading according to the present invention is a filtered light that transmits a so-called low transmission band, that is, a wavelength of light that is transmitted or mainly transmitted is 580 to 380 mm. For example, 570-430 (light blue or blue), 560-480 (blue green), 570-4
90 (green). The above-mentioned band transmission filter can further reduce the color difference of the eyes and enhance the visual clarity. It should be pointed out that the light filter described in the present invention is capable of filtering out a part of, or most or all of, the above-mentioned relatively long light waves, and also filters out the near infrared light. It is desirable to remove it.
For example, a light wave having a wavelength of 650 to 1000, or 650 to 3000 millimicrons is partially or mostly,
Alternatively, all are removed by filtration (absorption or reflection), or 700 (or 760) to 3000 (and 1000 or more).
0) Filter only (mostly or completely) light waves having a wavelength of millimicrons by filtering out (absorption or reflection). The above-mentioned near-infrared ray is also for accelerating the growth and myopia of the eyeball. The following numerical table shows a specific example of the characteristics (expressed by light transmittance) of a light filter used for preventing or treating myopia during reading of the present invention. Due to the continuity of the spectrum and the gradual change in the transmittance that a material generally has, the transmittance of the present invention generally refers to an average value within a certain wavelength range.

As can be seen, according to the design concept of the present invention, that is, the transmittance of the transparent light-shielding material used is relatively high for short-wavelength visible light and low for long-wavelength light. Unless the idea is changed, many other examples of the present invention can be shown by appropriately changing the numbers in the above table. However, it should be pointed out that changing the transmittance of the spectrum causes a change in the effect of preventing or treating myopia. In order to obtain a better effect, the transmittance of light having a short wavelength is 0.7 or more, for example, 0.
It is desirable that the transmittance of long-wavelength light is set to 0.3 to 8 to 0.9, for example, 0.2 or 0.1 or less. More examples can be shown by continuously changing the spectral transmittance characteristics. For example, the transmittance curves are shown in FIGS.
Any of the transparent light-shielding objects having different curves shown in FIG. 4 can be used as a light filter or a light-filter eyeglass lens used for the prevention of myopia and the auxiliary treatment of the present invention. 1 to 4, the vertical axis represents the transmittance of the transparent light-shielding material,
Any unit can be taken. Among them, the transmittance at the peak point of each curve is smaller than 1 (1 indicates that the transmittance is 1).
00%). The horizontal axis is the wavelength of the light, the unit being millimicrons. In order to save space, four to five independent transmittance curves having different transmittances are drawn in FIG. One transmittance curve represents one optical feature of the transparent light shield according to the present invention, and is indicated by numerals 1 to 5, respectively. When perceived by the color vision of the eye, materials of different transmittance take on different colors. For example, in the case of a material in which the peak value of the transmittance shows a flat plate shape, the wavelength of the peak value is 610 or more, 580 or more, 560 to 610, 540 to 590, or
80 or 570 or less, 560 or less, 570 to 500,
560 to 490, 540 or less, 520 or less, 500 mm or less, but the transmittance of other wavelengths is relatively low or basically not transmitted, and the corresponding color is approximately red,
Red pink, yellow, yellow green, blue (light blue), dark blue, green, green blue, blue green, blue. That is, as the wavelength at which the peak value of the transmittance shifts from the long wave side to the short wave side, the appearing complexion gradually changes from "warm color" to "cool color". Since the transmittance of the spectrum possessed by the light filter material can change continuously within the visible spectrum, the colors also appear almost infinitely. In the present invention, the complexion of the transparent light filter for preventing or treating myopia is basically blue (light blue), blue, green,
Blue green, green blue, blue blue, blue green,
Mainly "cold colors" such as yellow green.

The above-mentioned transparent light-shielding material is made of light filter glass or color glass, or a paint film and a sandwich-like light filter sheet.
For convenience of common movement, the above-mentioned transparent light shield may be made of light-filtered or colored polymethyl methacrylate sheet or plastic, or synthetic resin or other similar material, especially abrasion-resistant material. It is further advantageous. The above-mentioned transparent shading material is made to the required size, shape and thickness (the transmittance can be controlled by the thickness and suitable for reading under different illuminance), and placed at an appropriate position between the reading material and the eyes. If the reading material can be covered by this method, it becomes a light filter for preventing or treating myopia during reading according to the present invention. For example, a book size or monitor screen size is suitable for book reading and screen reading, respectively. For example, a plate, a sheet, or a film is used. Also support,
Frame on transparent shade for convenient fixing, holding or decoration,
A stand, a fixed object, a handle, and an attachment may be attached. For example, clips or peels off near the edges, and an adhesive that can be used repeatedly for attachment is used for fixing. A non-quadrilateral shape enhances decorativeness. For example, a single heart shape, a wavy edge, or the shape of the animal's head, claw, or tail that appears at the edge, etc. In particular, the transparent shading material has the appropriate number and size of hollows, see-through frames, and streaks that are necessary, so that it not only has a decorative effect, but also saves material, and allows characters to be visually identified. The effect of preventing myopia and treating can be enhanced by increasing the accommodation response when scanning blank spaces and reducing the total accommodation error. In addition, the transparent light-shielding material can arbitrarily divide the light-shielding surface as a whole into several areas having different transmittance characteristics, and become a different color, that is, a colorful light-shielding material. This is useful not only for the decorative effect, but also for reducing the color indication phenomenon due to a single-transmittance light-shielding object during long-time reading, and reduces eyestrain.

When the above-mentioned transparent light-shielding material including the above-mentioned colorful light-shielding material and the light-shielding material having the transparent structure is formed as a lens into a spectacle or a hung-up lens, the myopia prevention or treatment light filter eyeglass or the hung-up light filter of the present invention is provided. It becomes a lens. If such glasses or lenses are worn and attached during reading, the effects of preventing or treating myopia are included. Above all,
A lens with a transparent structure at the top provides the convenience of seeing the distance and the distance alternately. Depending on the refraction error of the eye, this lens may be used for nearsighted, myopic diffused light, or farsighted, farsighted diffused light, or a double focus lens, multi-focus lens, or triangular prism lens, depending on the refractive error of the eye. Can be supplied for use in strabismus or latent strabismus.

The light filter and light filter lens of the present invention, when used for reading, selectively block or reduce the entry of relatively long wavelength light into the eye, and provide the retino produced by the relatively long wavelength light. The stimulating effect on the growth and expansion of the eyeball due to the spot can be reduced. At the same time, it relatively enhances the process of hyperopia of the eye by retino spots created in relatively short wavelength light. In addition, the visual environment of less long-wavelength light and more short-wavelength light reduces the amount of accommodation stimulus, reduces the amount of accommodation response to the eye, and reduces the eye's accommodation load during reading. This, on the other hand, also helps to enhance the effect of promoting concentration on accommodation, and reduces lag errors in near-eye accommodation of the eye. Filtering out some of the light also reduces the contrast appropriately and reduces eye fatigue by reducing the energy of the light entering the eye. Therefore, the light filter and the light filter glasses of the present invention have a preventive or therapeutic effect on myopia.

Regarding the prevention and treatment of hyperopia during reading, the transparent filter used in the present invention has a feature that while transmitting all or most of light having a relatively long wavelength,
Absorbs or reflects (ie, filters) light waves having a relatively short wavelength, or most or all of them, or has a relatively high transmittance relative to light having a relatively long wavelength, and a relatively short wavelength. Shows relatively low transmittance relative to light having the ratio of 1.5 to 1 or more, for example, 2:
It can be 1, or 3: 1, or 4: 1, or even higher, for example 8: 1. Generally, the higher the ratio, the higher the effect. The so-called relatively long wavelength is a wavelength of 550 millimicrons or more, for example, 580 or more, or 5
70 or more, or 560 or more, or 590 or more, or 600 millimicrons or more. The higher the transmitted wavelength, the stronger the accommodation stimulus to the eye, which leads to a relatively small concentration promoting effect on the accommodation response and a greater accommodation delay error, whereby the accommodation spot promotes myopia to the eye Helps to enhance its effects and achieves the effects of preventing or treating hyperopia. However, at the same time, the higher the wavelength transmitted, the narrower the transmitted spectrum becomes, and if it is too narrow, it causes the illuminance to be too low, and eyestrain tends to be tired. Therefore, the lower limit value of the wavelength to be transmitted in whole or most is determined in consideration of the lighting conditions. Normally, the light filter is better at around 570 mm, but when used for reading, the effect of prevention of hyperopia and the effect of adjuvant treatment are relatively normal. However, a lower limit of 610, or 600, or 580-600 millimicrons, can increase the effect of treating hyperopia during reading to a certain extent, and even better for eyes with a relatively strong ability to adjust. Lower limit is 57
At wavelengths shorter than 0 mm, the effect is significantly reduced. The so-called part, most, or all of the light wave whose absorption or reflection wavelength is relatively short corresponds to an upper limit of the wavelength corresponding to the lower limit wavelength of a longer wavelength described above. For example, 570, 610, 600, 580-60
It can be around 0, or around 590, or around 580 millimicrons. If it is higher than 610 mm, its effect is affected by a decrease in light energy. 56
If it is lower than 0 millimicron, the effect is significantly reduced. In particular, the characteristics of the light filter used for prevention or treatment of hyperopia during reading of the present invention is a filtered light that transmits a so-called high transmission band, that is, a wavelength of light that is transmitted or mainly transmitted is 560 to 560. In the range of 760 millimicrons. For example, 590-700, or 600-7
50, or 600-700 millimicrons. The band-pass filter described above can further reduce the color difference of the eyes and enhance the clarity of vision. It should be pointed out that
The light filter described in the present invention partially or mostly transmits the above-described relatively long light wave, and further partially or mostly transmits near-infrared light having a wavelength of 760 to 3000 mm. Alternatively, it is desirable to transmit all the light. This is because the above-mentioned infrared rays enhance the effect of promoting the growth of eyes.

The following numerical table shows a specific example of the spectral characteristics (expressed by the average transmittance) of a light filter used for preventing or treating hyperopia during reading of the present invention.

As can be seen, according to the design concept of the present invention, that is, the transmittance of the transparent light shielding material used is relatively high for visible light of a long wavelength and low for light of a short wavelength. Unless the idea is changed, many other examples of the present invention can be shown by appropriately changing the numbers in the above table. However, it should be pointed out that changing the transmittance of the spectrum causes a change in the effects of hyperopia prevention and treatment. In general, the transmittance of long wavelength light should be 0.7 or more, for example, 0.8 to 0.9, and the transmittance of short wavelength light should be 0.3, for example, 0.2 or 0.1 or less. desirable. More examples can be shown by continuously changing the spectral transmittance characteristics. For example, any of the transparent light-shielding objects whose transmittance curves have different shapes as shown in FIGS. 5 to 7 can be used as a light filter or a light filter eyeglass lens used for the prevention of hyperopia and the auxiliary treatment of the present invention. . In FIGS. 5 to 7, the vertical axis represents the transmittance of the transparent light-shielding material.
The transmittance at the peak point of each curve is smaller than 1 (1 indicates that the transmittance is 100%). The horizontal axis is the wavelength of the light, the unit being millimicrons. FIG. 1 shows four to five transmittance curves. One transmittance curve is representative of one optical feature of the transparent light shield according to the present invention, each number 1
-5.

The above-mentioned transparent light shielding material can be made of light filter glass or color glass. For convenient movement and resistance to rupture, the above transparent material with light filter or colored polymethyl methacrylate sheet or plastic, or synthetic resin or other polymer material, especially abrasion-resistant material It is more advantageous to manufacture it as a light shielding material. The above-mentioned transparent shading material is made to the required size, shape and thickness (the transmittance can be controlled by the thickness and suitable for reading under different illuminance), and placed at an appropriate position between the reading material and the eyes. If it is possible to cover the reading material, it becomes a light filter for preventing or treating hyperopia during reading of the present invention. For example, a book size or monitor screen size is suitable for book reading and screen reading.
For example, a plate, a sheet, or a film is used. In addition, a frame, a stand, a fixed object, a handle, and an attachment are attached to the transparent light-shielding material for convenience in supporting, fixing, holding, or decorating. For example, a fixed material is an adhesive that can be clipped or peeled off near the edge and repeatedly used for attaching. A non-quadrilateral shape enhances decorativeness. For example, one leaf-shaped tree,
Irregular rim shapes, or the shape of the animal's head, claws, or tail that appears at the rim, etc.

In addition, the transparent light-shielding material can be divided into several areas having different transmittance characteristics on the light-shielding surface as a whole, resulting in different colors, that is, various light-shielding materials. This is useful not only for the decorative effect, but also for reducing the color indication phenomenon due to a single-transmittance light-shielding object during long-time reading, and reduces eyestrain.

When a transparent light-shielding material including the above-mentioned various light-shielding materials is made into a lens for eyeglasses or a spectacle as a lens, a light-filtering eyeglass or a light-filtering lens for preventing or treating hyperopia according to the present invention is obtained. Wearing and wearing such glasses or lenses during reading can prevent or treat hyperopia. Depending on the refraction error of the eye, this lens may be used for nearsighted, myopic diffused light, or farsighted, farsighted diffused light, or a double focus lens, multi-focus lens, or triangular prism lens, depending on the refractive error of the eye. Can be supplied for use in strabismus or latent strabismus.

The light filters and light filter glasses of the present invention are used for reading, and selectively block or reduce the entry of relatively short wavelength light into the eyes, thereby forming a retino spot formed into relatively short wavelength light. Can suppress the inhibitory effect on eye growth and expansion. At the same time, it enhances the process of myopia due to the retino spots created in relatively long wavelength light. In addition, the visual environment of more long-wavelength light and less short-wavelength light increases the amount of accommodation stimulus, and increases the delay error in the near-vision accommodation of the eye. Filtering out some light rays reduces contrast appropriately, reduces light energy entering the eye, and reduces eye reading fatigue. Therefore, the light filter and the light filter glasses of the present invention have the effect of preventing or treating hyperopia.

[0018]

The following examples illustrate the present invention and should not be construed as limiting the invention in any way. A rectangular filter sheet with side lengths of 13 and 19 cm is made from standard blue (light blue) color-reduced synthetic resin light filter material, suitable for sandwiching between 32 format books, and myopic while reading the present invention. A blue (light blue) transparent light-shielding sheet that prevents and treats Peel off the light-shielding sheet on one side to strongly attach the light-shielding sheet to the paper,
You may attach a double-sided adhesive tape that can be used repeatedly.

A light filter material made of polymethyl or synthetic resin having a green appearance and having a side length of 16 and 2
It is suitable for making a rectangular filter sheet of 2 centimeters and sandwiching it in a book of 16 format, and becomes a green transparent light shielding sheet for preventing or treating myopia during reading of the present invention. In order to strongly attach the light-shielding sheet to the paper surface, a miniclip or a turning fold may be added to the header or footer of the light-shielding sheet.

A light filter material made of glass or plastic having a blue appearance and having side lengths of 34 and 22.
It is suitable for making a rectangular filter plate of centimeters and covering both left and right sides of an open 16 format book, and becomes a blue transparent light shielding sheet for preventing or treating myopia during reading of the present invention. A plastic frame may be attached to the light-shielding plate so that the light-shielding sheet can be easily supported or moved by hand.

A rectangular filter film having a side length of 16 and 22 cm is made of a light filter material having a blue-green appearance, suitable for being sandwiched between 16 format books, and preventing myopia during reading of the present invention. And a blue-green transparent light-shielding film to be treated. Since the light-shielding film is strongly adhered to the paper surface, the header or the footer of the light-shielding film can be turned up under the paper surface, and can be easily sandwiched between upper and lower paper surfaces.

A glass or plastic light filter material having a green appearance and a side length of 30 and 2
Suitable for making a rectangular filter plate that is 2 centimeters, attaching a fixing device, and covering a 14 inch monitor, it becomes a green transparent light shielding sheet that prevents or treats myopia during reading using the monitor of the present invention.

The length of the side whose edges are modified into a waveform by a light filter material having a yellow-green appearance is 12 or 18.
Make a rectangular filter sheet that is centimeters,
It is a yellow-green transparent light-shielding sheet that is suitable for being sandwiched between 32 format books and that prevents or treats myopia during reading according to the present invention. In order to strongly attach the light-shielding sheet to the paper surface, a mini-clip or a turn-over fold may be formed on one edge of the light-shielding sheet.

A rectangular filter sheet having a side length of 16 and 22 centimeters is made of a light filter material having a green appearance, and is suitable for being sandwiched between 16 format books. In addition, several streaky blank frames in which the light filter sheets are arranged regularly or irregularly are cut out to provide a green transparent light-shielding sheet with a blank frame for preventing or treating myopia during reading of the present invention.

A leaf-shaped filter sheet having an outer diameter of 19 and 23 cm is made of a light filter material having a green, blue or green, blue (light blue), or blue sandwich, and has a 16-format book. It is a multicolor transparent light-shielding sheet suitable for sandwiching and preventing or treating myopia during reading of the present invention. For the sake of decoration and easy handling, a protruding edge similar to the leaf ridge is made at the bottom of the leaf.

When the light filter material used in each of the above embodiments is manufactured into a lens as spectacles, light filter spectacles for preventing or treating myopia during reading of the present invention can be obtained. The lens is also made into a lens that corrects for refractive errors, and is suitable for use in eyes with refractive errors. If the lens has a triangular prism structure, it is suitable for use in an eye with oblique or latent squint. When the lens has a triangular prism structure directed outward at the bottom, the focusing action of the eye during reading can be enhanced, and the accommodation error of the neighborhood vision can be further reduced. In addition, for the convenience of the eyeglass user's use, the above-mentioned light filter material is made into a hung-type lens type light shield, and attached to an ordinary eyeglass frame at the time of use,
Used to prevent and treat myopia.

One of the best embodiments of the present invention has a thickness of 1
~ 2mm around wear-resistant synthetic resin as the base material,
The spectral transmittance shows a peak close to a flat curve at a wavelength of 490 to 570 millimicrons, is higher than 0.8 as shown by curve 3 in FIG. 3, and the transmittance in other wavelength ranges is relatively low. A light filter having a transmittance of less than 0.2 or 0.1 with a light wave having a wavelength of 590 mm or more and a transmittance of less than 0.2 or 0.1 is used to obtain a transparent light-shielding sheet for preventing or treating myopia during reading according to the present invention. The main color of the color is green, which is suitable for general reading use for the majority of eyes. Making glasses with such light filter materials into lenses provides one of the best embodiments of light filter glasses for preventing or treating myopia during reading of the present invention.
It is suitable for use in the majority of emmetropia and mildly refractive eyes.
Also, if you make it a hung lens, you can use it according to your glasses.

Another one of the best embodiments of the present invention is to use a wear-resistant synthetic resin as a base material having a thickness of about 1 to 2 millimeters and to show a peak having a spectral transmittance near a flat curve at a wavelength of 400 to 565 millimicrons. As shown by curve 3 in FIG. 1, the transmittance is higher than 0.8 and the transmittance in other wavelength ranges is relatively low. In particular, the transmittance is 0.2 or 0 for a light wave having a wavelength of 590 mm or more. 1. A light-shielding sheet that is smaller than 1 and has the required size to provide a transparent light-shielding sheet for preventing or treating myopia during reading of the present invention. The main color of the color is blue, which is suitable for general reading use in the majority of eyes with slightly weak adjustability. When such a light filter material is made into a spectacle or a spectacle mounted lens on a lens, the best embodiment of a light filter spectacle or spectacle mounted lens that prevents or treats myopia during reading of the present invention. You get one. It is suitable for use in the majority of slightly emmetropic eyes and slightly dioptric eyes with poor accommodation.

The following are some specific examples of the present invention (a red transparent light-shielding sheet for preventing or treating hyperopia during reading of the present invention). Red plastic light filter material to make rectangular filter sheet with sides 13 and 19 cm long, suitable for sandwiching in 32 format books, red transparent to prevent or treat hyperopia while reading this invention It becomes a light shielding sheet. In order to strongly adhere the light-shielding sheet to the paper surface, the light-shielding sheet may be peeled off on one side of the light-shielding sheet, and a double-sided adhesive tape that can be used repeatedly for attachment may be attached.

The present invention is suitable for making a rectangular filter sheet having a side length of 16 and 22 cm with a light filter material made of polymethyl or synthetic resin having a pink or carmine appearance, and sandwiching it between 16 format books. It becomes a pink or carmine transparent light-shielding sheet that prevents or treats hyperopia while reading a book. In order to strongly attach the light-shielding sheet to the paper surface, a miniclip or a turning fold may be added to the header or footer of the light-shielding sheet.

A leaf-shaped filter sheet having a major axis and a minor axis of 23 and 19 cm, respectively, made of a light filter material having an appearance of red, carmine, yellow red or a mixture of red and pink, which is sandwiched between 16 format books. And a multicolor transparent light-shielding sheet that prevents or treats hyperopia during reading according to the present invention. For the sake of decoration and easy handling, a protruding edge similar to the leaf ridge is made at the bottom of the leaf.

When the light filter material used in each of the above embodiments is manufactured into a lens as eyeglasses, light filter eyeglasses for preventing or treating hyperopia during reading of the present invention can be obtained. The lens is also made into a lens that corrects for refractive errors, and is suitable for use in eyes with refractive errors. If the lens has a triangular prism structure, it is suitable for use in an eye with oblique or latent squint. When the lens has a triangular prism structure with the bottom facing inward, the concentration of the eyes during reading is reduced, and the accommodation error of the neighborhood vision can be further enhanced. In addition, for the convenience of the eyeglass user, the above-mentioned light filter material is made into an attached lens type light shield, which is attached to an ordinary eyeglass frame at the time of use to prevent or treat hyperopia.

One of the best embodiments of the present invention has a thickness of 1
~ 2mm around wear-resistant synthetic resin as the base material,
The spectral transmittance shows a peak close to a flat curve at a wavelength of 750 to 590 millimicrons, is higher than 0.8 as shown by curve 2 in FIG. 6, and the transmittance in other wavelength ranges is relatively low. A transparent light-shielding sheet for preventing or treating hyperopia according to the present invention is obtained by taking a necessary size with a light filter having a transmittance of light having a wavelength of 570 mm or less and a transmittance of less than 0.1. The main color of the color is red, suitable for general reading use in the majority of eyes. When eyeglasses are made of such a light filter material in a lens, one of the best embodiments of the light filter eyeglasses for preventing or treating hyperopia according to the present invention is obtained. It is suitable for use with the majority of emmetropia and mild refractive errors. Although it is already known to use red light filter glasses as glasses for treating low vision,
There is no known state-of-the-art technology for using red-light-filtered eyeglasses to prevent or treat hyperopia.

[0034]

The present invention prevents myopia and hyperopia described in the present invention,
Transparent shades to be treated, eyeglasses, or hook-up eyeglass lens-type shades for use by eyeglass users can be used by adolescents who have not stopped developing their eyes for long-lasting reading or when using the eyes. Use it for the best effect. For example, when used by adolescents, particularly when used by very unstable students in the refracted state, between the ages of 10 and 16. When used by adults, the effect is greatly reduced.

The transparent light filter glasses for preventing and treating myopia and hyperopia described in the present invention, or the hook-up type spectacle lens type light shield provided to the spectacle user mainly use near-range reading and eyes. Although the maximum effect can be obtained when used in other cases, the effects of preventing and treating myopia and hyperopia can be stored to a certain degree even when used in far vision.

[0036]

[Brief description of the drawings]

FIG. 1

FIG. 4 is a graph showing the transmittance of the spectrum of a light filter or a light filter spectacle lens used in the prevention or adjuvant treatment of myopia of the present invention. One transmittance curve is representative of one optical feature of the transparent light shield according to the present invention, each number 1-5.
Indicated by

FIG. 5

FIG. 7 shows a transmittance of a spectrum of a light filter or a light filter spectacle lens used for prevention of hyperopia or an auxiliary treatment according to the present invention, and one transmittance curve represents one optical characteristic of the transparent light-shielding material according to the present invention; Numbers 1 to 5 respectively
Indicated by

Claims (15)

[Claims] 1. The method according to claim 1, which is used mainly for short-range visual tasks such as reading, which can selectively transmit more short-wavelength light waves and block transmission of light waves having more longer wavelengths. A transparent light filter sheet (or light filter plate, light filter film) suitable for covering a visual work object by being installed between the visual work objects and used for prevention and treatment of myopia. 2. The transparent light filter sheet according to claim 1, wherein the ratio of the transmittance of the transmitted short-wavelength lightwave to the transmittance of the long-wavelength lightwave is greater than 1.5. . 3. The method for preventing or treating myopia according to claim 1, wherein the transmittance of a short-wavelength light wave to be transmitted is higher than 0.6 and the transmittance of a long-wavelength light wave is lower than 0.3. Transparent light filter sheet. 4. A light wave having a short wavelength which selectively transmits a relatively large amount of light having a wavelength of 580 mm or less.
A transparent light filter sheet used for the prevention and treatment of myopia described in (1). 5. The wavelength of a short-wavelength light wave transmitted more is 4
The transparent light filter sheet according to any one of claims 1 to 3, which is used for preventing or treating myopia, having a diameter of 80 to 570 mm. 6. A transparent light filter sheet used for the prevention or treatment of myopia according to claim 1, wherein a single color of any of the following colors or a multicolor obtained by arbitrarily combining the colors is added. That is, light blue, blue, green, blue, blue green, green blue, blue blue, blue green, yellow green. 7. The transparent light filter sheet according to claim 1, which has a transparent structure and is used for the prevention or treatment of myopia. 8. Light filter glasses or hanger made by the light filter sheet according to claim 1, which is mainly used during short-distance viewing such as reading, and used for prevention and treatment of myopia. Lighting filter lens. 9. It is used mainly for short-distance viewing work, such as reading, which can selectively transmit more long-wavelength light waves and block transmission of light waves having much shorter wavelengths. A transparent light filter sheet (or light filter plate, light filter film) suitable for covering the visual work object by being installed between the light work sheet and the visual work object and used for prevention and treatment of hyperopia. 10. The transparent light filter sheet according to claim 9, wherein the ratio of the transmittance of the long-wavelength light wave to the short-wavelength light wave is greater than 1.5. . 11. The transmittance of a transmitted light wave of a long wavelength is 0.6.
The transparent light filter sheet for preventing or treating hyperopia according to claim 9, wherein the transparent light filter sheet has a higher transmittance of a short wavelength light wave than 0.3. 12. The method according to claim 9, wherein the long wavelength light wave selectively transmitted more is light having a wavelength of 580 mm or more.
11. A transparent light filter sheet used for the prevention or treatment of hyperopia described in 11. 13. The wavelength of long-wavelength light which transmits more is 6
The transparent light filter sheet according to any one of claims 9 to 11, which is used for prevention or treatment of myopia. 14. A multi-color of any one of the following colors, or any combination thereof.
3. A transparent light filter sheet used for prevention or treatment of hyperopia described in 3 above, that is, red, pink, carmine, yellow red. 15. A light filter spectacle or a hanger made by the light filter sheet according to claim 10 which is mainly used during short-distance viewing work such as reading and used for prevention and treatment of hyperopia. Lighting filter lens.