CN210294714U

CN210294714U - Glasses for inhibiting myopia from deepening

Info

Publication number: CN210294714U
Application number: CN201921357070.7U
Authority: CN
Inventors: 刘振灏; 刘振勃
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-04-10
Anticipated expiration: 2029-08-19

Abstract

The utility model discloses a glasses of suppression myopia deepening, including spectacle-frame and mirror leg, a serial communication port, every spectacle-leg includes first, second mirror leg, the second mirror leg is connected the spectacle-frame with between the first mirror leg, the second mirror leg can be relative first mirror leg concertina movement makes the relative eyeball of spectacle-frame removes the relation between the secondary position after the drawing from primary position and does: p₂＝P₁/(1‑d₂P₁) Wherein P is₁Is the actual lens power, P, in said primary position₂As the effective lens power in the secondary position, d₂Is the primary position and theThe distance of the secondary position meets the following conditions: 0<d₂<60 mm. The utility model discloses a convenient scalable mode has realized the comfortable security of myopia number of degrees and has adjusted on one set of glasses, uses portably and with low costs.

Description

Glasses for inhibiting myopia from deepening

Technical Field

The utility model relates to a glasses, especially a glasses that restraines near-sighted deepening.

Background

Myopia is defined when the ciliary muscle within the eye responsible for focus accommodation is at the physiologically most relaxed level and distant scenes are focused in front of the central retina. Not only does the distant image become blurred, it can cause visual disturbances, but it can also cause serious complications such as glaucoma, retinal detachment and macular degeneration, with consequent blindness. The greater the chance of blindness as myopia progresses. Myopia occurs because reading too much and reading too close, causing a focal accommodation spasm of the eye and continued external internal rotator muscle contraction that causes hyperextension of the eye axis (resulting in true myopia and continued rapid increase in power), so controlling the reading process is particularly important to prevent myopia from occurring and deepening.

During reading, the ciliary muscles inside the eye contract to change the shape of the lens for focusing (accommodation), while the internal external extensor muscles of the eye contract (primarily the internal extensor muscles, secondarily the superior and inferior rectus muscles) to obtain a binocular single image.

The nature of myopia progression is caused by the increase of the axis of the eye, and inhibition of the increase of the axis of the eye prevents the progression of myopia. In the prior art, the increase of the axis of the eye is inhibited by carrying out myopic defocusing on the peripheral retina, and the function of inhibiting the development of myopic degrees can be played to a certain degree.

When a patient wears spectacles for near vision (correcting distant vision) to read, the internal ciliary muscle of the eye is in focus and the external internal ciliary muscle contracts to exert extreme pressure on the eye during continuous operation. This tremendous pressure causes focal accommodation spasms and the involvement of the eye by contraction of the external internal rotator muscles, causing hyperextension of the eye axis, which can lead to or exacerbate myopia. If this condition is not effectively inhibited, myopia progresses.

Generally, for a patient who wears traditional glasses for myopia, the patient with myopia can take off the glasses for reading because the reading material is close to the eyes during reading, but if the patient does so, the following inconveniences and disadvantages are caused:

(a) in the presence of astigmatism (which is common), the refractive correction for astigmatism is lacking without a lens, so the image is blurred.

(b) If the myopia is deep, for example, over 400 degrees. He will bend over and bend over, causing fatigue and great discomfort. The close reading distance also causes huge working pressure of external internal rotator muscles, and the increase of adjustment caused by a triple-linkage physiological mechanism can easily deepen myopia.

(c) If the degree of myopia is not too deep, the reading distance is not so close as compared with (a), but the effect of suppressing the progression of myopia by the present invention cannot be enjoyed because glasses are not worn.

(d) If the myopic patient needs to look further away, he needs to wear myopic glasses and the eye needs to readjust the focusing accommodation and external internal rotator muscle work to accommodate. When the user needs to look near, the user needs to take off the glasses again and adjust focusing and work of external internal rotator muscles again to adapt. Therefore, the glasses are worn and taken off and adjusted to be removed, which is absolutely inconvenient and makes eyes more fatigued.

(e) Blue light prevention glasses are not worn, and under the illumination of reading electronic products (such as computers, mobile phones and the like) or blue light emitting LEDs and sunlight, excessive harmful blue light cannot be prevented, so that the eyes and physiological health are harmed in the past.

In addition, different methods of correcting myopia, including those that do not inhibit the effects of myopia progression, include the following:

first, simple myopic lens correction, which does not act to inhibit the progression of myopia, often results in increased myopic power.

Second, corneal plastic surgery, which does not inhibit myopia progression, causes glare, corneal dryness and infection, postoperative rebound of myopia degrees for several years, increases the risk of retinal holes and loss, and the like.

And thirdly, two sets of glasses are used alternately, one set of glasses looks far and the other set looks near, wherein the glasses for looking near reduce focusing regulation of eyes and slow down myopia deepening. The defects are inconvenience, high cost, low compliance and poor adaptability of reading of the close-up spectacles with the overlapped prisms.

Fourth, the bifocal lenses, the near part, is used for relaxing and focusing to adjust to prevent myopia from deepening, and the shortcomings are that the appearance is not easy to accept, the desktop computer is inconvenient to watch, and the prism adaptability is poor due to the fact that the near part is overlapped during sports.

Fifth, when the myope wears the normal prescription myopic glasses, the far-distance view only focuses on the central retina, and the peripheral view focuses on the back of the retina (hyperopia defocus phenomenon). The near vision degree at two sides of the side defocusing lens is smaller than that at the central part, so that peripheral images can be focused in front of the retina at the side after wearing, and the defect of the long-sight defocusing at the side of the eye can be counteracted, thereby preventing the over-extension of the axis of the eye and inhibiting the myopia from deepening. The defects are that the reading process is not controlled, and the myopia-preventing deepening effect is not obvious.

Sixth, the progressive lens, the near part, is used for relaxing the focusing adjustment to prevent the myopia from increasing, and the disadvantage is that the young myopes may find the near part incorrectly when wearing the progressive lens, which affects the effect. Optical distortion on both sides of the lens causes discomfort and the prism cannot be superimposed independently on the lens near viewing area.

Seventhly, the medicine is used for paralyzing ciliary muscles and wearing double-light or progressive lenses, pupils of a wearer are enlarged by the medicine, and focusing adjusting capacity is reduced, so that the focusing adjusting capacity of the double-light or progressive lenses is deficient or reduced during reading, and myopia deepening is relieved. The defects of glare, accelerated heartbeat, fever, dry eyes and dry mouth; after long-term use, harmful ultraviolet rays easily enter eyeballs, and cause degeneration of retina and macula lutea. The atropine drug toxicity of the paralytic ciliary muscle remains at lower concentrations. The toxicity of the latest 0.01% atropine with ultra-low concentration is to be observed, but the treatment effect is not ideal.

Eighth, the orthokeratology lens worn at night can flatten the radian of the cornea of a myope to a certain degree, so as to achieve the effects of correcting and preventing myopia from deepening. Because of its invasive nature, the cornea is prone to breakage and infection, and keratoconus is a condition that sometimes occurs.

In conclusion, the traditional myopia correction method has many defects and is not safe and reliable to use. With the increasing number of people with myopia, a more convenient and safer way to solve the problem is more urgently needed.

SUMMERY OF THE UTILITY MODEL

It is to be understood that both the foregoing general description and the following detailed description of the present disclosure are exemplary and explanatory and are intended to provide further explanation of the disclosure as claimed.

In order to overcome the problems, the utility model provides a glasses of suppression myopia deepening, including spectacle-frame and mirror leg, its characterized in that, every spectacle-leg includes first, second mirror leg, the second mirror leg is connected the spectacle-frame with between the first mirror leg, the second mirror leg can be relative first mirror leg concertina movement makes the relative eyeball of spectacle-frame is followed primary position and is removed the relation of effective number of degrees and lens number of degrees between the secondary position after the extension and be:

P₂＝P₁/(1-d₂P₁)

wherein, P₁Is the actual lens power, P, in said primary position₂As the effective lens power in the secondary position, d₂Is the distance between the primary position and the secondary position and satisfies:

0<d₂<60mm。

preferably, the utility model further provides a pair of glasses for inhibiting the myopia from deepening, which is characterized in that,

first mirror leg is including setting up in the jack of its front end, second mirror leg scalable set up in the first end of jack.

the glasses further comprise a movable body, the movable body is embedded in the second end of the jack, and the second glasses legs are arranged in the jack and connected with the movable body.

a plurality of grooves are longitudinally and parallelly formed in the jack, a plurality of parallel convex strips are longitudinally formed at the insertion head end of the movable body, and the convex strips and the grooves are mutually clamped.

the inserting tail end of the moving body is provided with a plurality of concave-convex stripes and a plurality of convex transverse strip-shaped operating parts.

the movable body comprises a rack and a gear which are meshed with each other, and an adjusting knob arranged on the side surface of the first glasses leg rotates to drive the gear to rotate, so that the rack containing the movable body moves, and the relative distance between the first glasses leg and the second glasses leg is adjusted in a telescopic mode.

the telescopic glasses are characterized in that the jack further comprises a spring, a telescopic body, a rotary disc, a top rod and a sliding groove, the telescopic body is connected with the second glasses leg into a whole, the width of the tail end of the telescopic body is larger than the opening of the jack, the spring is sleeved on the telescopic body, the rotary disc is sleeved at the tail end of the telescopic body, a plurality of parallel convex strips are arranged on the outer circumferential surface of the rotary disc along a central shaft, the first end of the top rod is sleeved in the sliding groove and extends out of the opening part of the sliding groove, the second end of the top rod is abutted against the rotary disc, a plurality of one-way open parallel sliding groove openings are formed in the sliding groove, a plurality of pointed protrusions are arranged at the head of the;

the push rod extends out of one end of the jack through pressing, the push rod presses the rotary disc to move downwards along the sliding groove, when the rotary disc is separated from the sliding groove at a meshing position, the pointed protrusion at the head of the push rod and the inclined plane of the rotary disc generate radial force to force the rotary disc to rotate, the telescopic body at one end of the rotary disc is abutted to the rotary disc to compress, the spring at the outer side of the telescopic body is in a compression state, the mirror frame is in a primary position, when the push rod is pressed again, the pointed protrusion at the head of the push rod is separated from the inclined plane of the rotary disc, the rotary disc rotates under the action of the radial force, the rotary disc and the sliding groove are overlapped at the meshing position, and along with the extension of the spring, the mirror frame reaches the secondary position.

the outer side edges of the left and right side lenses are provided with a plurality of grooves, and the value range of the depth d of each groove is as follows:

70mm<d<100mm。

the grooves are formed in the outer sides of the left and right lenses along the direction of the central horizontal base line.

the cross-sectional shape of the socket includes rectangular, circular and oval.

Adopt the utility model discloses a glasses of suppression myopia deepening through convenient scalable mode, has realized the comfortable security regulation of myopia number of degrees on one set of glasses, uses portably and with low costs.

Drawings

Embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Further, although the terms used in the present disclosure are selected from publicly known and used terms, some of the terms mentioned in the specification of the present disclosure may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present disclosure is understood, not simply by the actual terms used but by the meaning of each term lying within.

The above and other objects, features and advantages of the present invention will become apparent from the following detailed description of the present invention, which is to be read in connection with the accompanying drawings.

Fig. 1 is a schematic view of the working principle of the special glasses of the present invention;

FIG. 2 is a specific example of the working principle shown in connection with FIG. 1;

FIG. 3 is a schematic view of the special glasses of the present invention during use;

fig. 4 is a partial structural schematic view of a first preferred embodiment of the present invention;

FIG. 5 is a sectional view of A-A' in FIG. 4;

FIG. 6 illustrates a side view of the first preferred embodiment of FIG. 4 in a primary position;

FIG. 7 illustrates a side view of the first preferred embodiment of FIG. 4 in a secondary position;

fig. 8 is a partial structural view of a second preferred embodiment of the present invention;

FIG. 9 is a sectional structural view of B-B' of FIG. 8;

FIG. 10 is a partially exploded perspective view of a third preferred embodiment of the present invention;

FIG. 11 is a schematic cross-sectional exploded view of C-C' of FIG. 10;

fig. 12 is a schematic view illustrating the structure of the present invention improved on the lens.

Reference numerals

10-front frame

11-hinge

12-jack

13-convex strip

14-groove

15-concave-convex stripe

16-operating part

17-handle of mirror

18-body

19-first temple

20-ear support

21-second temple

22-nose pad

301-Right side lens

302-left side lens

81-adjusting knob

82-rack

83-gear

90-spring

91-expansion body

92-rotating disc

93-top rod

94-chute

921-convex strip

941-opening part

942-chute mouth

100-eyeball

200-eyeball

Detailed Description

The present specification discloses one or more embodiments that incorporate the features of the present invention. The disclosed embodiments are merely illustrative of the invention. The scope of the present invention is not limited to the disclosed embodiments. The invention is defined by the appended claims.

References in the specification to "one embodiment," "an example embodiment," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but all embodiments do not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Moreover, it should be understood that the spatial descriptions used herein (e.g., above, below, above, left, right, below, top, bottom, vertical, horizontal, etc.) are for purposes of illustration only, and that an actual implementation of the structures described herein may be spatially arranged in any orientation or manner.

Fig. 1 is a schematic view of the working principle of the present invention, showing the improvement effect of the front frame 10 with the near-sighted lens moving back and forth on the near-sighted adjustment degree.

Wherein, the meanings of the labels in the figure are as follows:

c, central plane of cornea

d1 distance from C to P1 in Primary position

d2 distance between primary position P1 and secondary position P2, d2 ═ 6cm

O reading book

O1' book image of eyes when the lens is at primary position

O2' book image of eye when lens is in secondary position

P1 lens in Primary position

P2 lens in Secondary position

R1 light after P1

R2 light after P2

100: eyeball

From this example of fig. 1, it can be appreciated that when the first and

second temples

19 and 21 of the worn myopic spectacles are moved relative to each other, a primary position P1 and a secondary position P2 of the lenses relative to the cornea are produced.

The relationship between the distance between the two positions and the achievable adjustment of the degree of myopia is further described as follows, i.e. the following detailed description describes the effect of the adjustable spectacles according to the present invention in use:

firstly, a description is given to the parameters:

f₁focal length of lens (unit: meter)

f₂Effective focal length of lens (unit: meter)

Distance between the back of the lens and the central corneal surface

d₂Change of the mirror eye distance (without regard to direction, only the difference is shown, so it is always a positive value)

d₂Is not only a sheetBit: rice and its production process

P₁Power of the lens [ minus (-) for myopia)]Unit: d (diapter)

P₂Effective lens power [ minus (-) for myopia)]Unit: d (diapter)

Reading distance is L (meter), and coefficient a is adjusted to satisfy:

1＞a＞0

wherein, the relationship among the above parameters is shown as the following formula:

effective lens focal length:

f₂＝f₁–d₂(1)

effective lens focal length:

f₂＝1/P₂＝1/P₁-d₂(2)

wherein,

1/P₂＝(1-d₂P₁)/P₁(3)

then the process of the first step is carried out,

P₂＝P₁/(1-d₂P₁) (4)

wherein d is₂Positive when advanced from the central corneal surface; therefore, 1-d₂P₁Is positive;

d₂aL, indicates that the power required to adjust is reduced as the lens is advanced from the central corneal surface,

wherein,

60mm＞d₂＞0mm (5)

an example combining the above relationships is as follows:

if the-5D lens is advanced 60mm from the primary position P1 to the secondary position P2, the effective lens power is, according to equation (4):

therefore, the utility model discloses a glasses have changed effective lens number of degrees through adjusting, and when the preceding frame 10 of taking near-sighted lens had moved 60mm forward, the near-sighted number of degrees was adjusted to-3.85D from the-5D of primary position, and like this, the number of degrees has descended + 1.15D.

Fig. 2 illustrates that, regardless of accommodation, when the lens is in the secondary position (relative to the primary position), both eyes are less required to read and view the image of the object looking down. Because the inferior image is elevated, the work pressure required for the external muscles of the eyes is reduced. Since the extraocular muscles are individually tensioned in the most balanced comfortable state when looking straight ahead.

Fig. 2 further illustrates that after the front frame and the myopia lens are moved forward, the light rays in the book are affected by the moved forward lens, resulting in a base-down prismatic effect, and the book appears to have moved upward a little, thus effectively reducing the downward looking and head lowering of the eye.

Wherein, each labeled meaning in fig. 2 is as follows:

c, central plane of cornea

d1 distance from C to original position P1

d2 distance between primary position P1 and secondary position P2

O reading book

O1' the image of reading book seen by eyes when the lens is at primary position

O2' the image of reading book is seen by eyes when the lens is at secondary position

P1 lens in Primary position

P2 lens in Secondary position

R1 light after passing through original position P1

R2 rays after passing through the secondary position P2

Z is the difference of height

100: eyeball

Fig. 3 shows a top view of the special glasses according to the present invention in use.

In which

eyeballs

100 and 200, the primary position P1 and the secondary position P2 of the lens are shown.

As can be appreciated from the illustration, when the display bezel and the near vision lens are moved forward, the light on the book is affected by the moving forward lens, producing a base-in prism effect. As a result, the user can maintain a single image of both eyes without having to converge both eyes as much.

Wherein, each labeled meaning in fig. 3 is as follows:

c, central plane of cornea

O reading book

P1 lens in Primary position

P2 lens in Secondary position

R1 light after P1

R2 light after P2

α angle of outward movement of book reading image caused by lens at original position P1

β angle of outward movement of the image of reading book caused by lens at secondary position P2

100: eyeball

200: eyeball

First embodiment

Fig. 4 is a partial structural schematic diagram of a first preferred embodiment of the present invention;

glasses for inhibiting myopia progression are shown comprising front frames 10 of different shapes and kinds including full, half and no frames, the front frame 10 being connected by hinges 11 to a movable body 18, the movable body 18 being movable relative to a first end of a first temple 19, the second end of the first temple 19 being connected to an ear support 20 by a handle 17.

Please refer to fig. 4 and 5 to disclose the structure of the front frame 10 and the movable body 18 in detail.

In the drawing, a first temple 19 is formed with a first end having a socket 12, the socket 12 has a certain length, a first end of a moving body 18 is connected to a second temple 21 connected to a hinge 11, and the moving body 18 is movably inserted into the socket 12.

As can be understood from fig. 5, a plurality of grooves 14 are longitudinally and parallelly formed in the insertion hole 12, a plurality of parallel convex strips 13 are longitudinally formed on the part of the movable body 18 inserted therein, and the convex strips 13 and the grooves 14 can be mutually engaged to adjust the relative distance between the first temple 19 and the second temple 21.

In addition, in order to facilitate the adjustment of the movable body 18, a protruding transverse strip-shaped operating part 16 is arranged at the tail part of the second end of the movable body 18, and a plurality of concave-convex stripes 15 are arranged on the end surface of the second end.

The moving body shown in the preferred embodiment is a rectangular parallelepiped, and is not limited by the structure in practical application, and may be an ellipsoid, a cylinder, or the like.

The operation of the first embodiment will now be described with reference to fig. 6 and 7.

Wherein figure 6 illustrates the structure of the displacement body 18 in the primed position.

Four vertically-parallel upright protruding semi-cylinders 13 of the moving body 18 are embedded in the longitudinally-parallel semi-cylinder grooves 14 inside the insertion hole 12 to form a tight locking system.

Fig. 7 illustrates the structure of the moving body 18 in the secondary position.

By pushing the moving body 18 into the insertion hole 12 of the first temple 19, the convex strip 13 of the moving body 18 close to the operating part 16 is pushed into the concave groove 14 of the insertion hole 12 inside close to the second temple 21 and locked.

The concave-convex stripes 15 and the operation part 16 on the back of the moving body 18 help the front frame 10 and the myopia lenses to move back and forth, and the horizontal strip-shaped operation part 16 prevents the front frame 10 and the myopia lenses from excessively sliding forwards and falling off from the two side glasses legs, so that a user can conveniently move the front frame and the myopia lenses back to the original positions. First temple 19 and handle 17 are connected to form a horizontal line L3. The horizontal line L3 forms a right angle with the vertical line of the upright head and the upright body. The distance between the front frame 10 and the first temple 19 is approximately 15 mm. The first temple 19 is 40mm long, 15mm high and 7mm wide.

Second embodiment

Fig. 8 and 9 further illustrate another construction of the moving body 18 moving with respect to the first temple 19.

The structure similar to that of the first embodiment is not described in good horse.

In this embodiment, a gear and rack movement adjustment mechanism is employed. As shown in fig. 8 and 9, a rack 82 is provided on the moving body 18 in the insertion hole 12 of the first temple 19 to be engaged with a gear 83, and the gear 83 is adjusted by an external adjusting knob 81, thereby achieving adjustment of the relative position between the first and

second temples

19 and 21.

During the use, drive gear 83 through rotatory adjust knob 81 and rotate, and then drive rack 82 and advance or retreat, rack 82 becomes an organic whole with moving body 18, consequently drives and moves body 18 and realizes continuous removal relative first mirror leg 19 to can realize the relative regulation of primary position to secondary position.

Third embodiment

Fig. 10 and 11 show a third constructive illustration of the movement of the mobile body 18 with respect to the first temple 19.

The similarity between the first and second embodiments will not be described in good horse.

The telescopic ball pen comprises a spring 90, a telescopic body 91, a rotating disc 92, a push rod 93 and a sliding groove 94, and forms a structure similar to the telescopic ball pen, wherein the telescopic body 91 is connected with the second leg 21 into a whole and is arranged in the insertion hole 12 on the first leg 19, and the width of the tail end of the telescopic body 91 is larger than the opening of the insertion hole 12, so that the telescopic body cannot be separated from the insertion hole 12. The spring 90 is sleeved on the telescopic body 91, the end of the telescopic body 91 is sleeved with a rotary disc 92, the outer circumferential surface of the rotary disc 92 is provided with a plurality of parallel convex strips 921 along the central axis, the first end of the ejector rod 93 is sleeved in the sliding groove 94 and extends out of the opening portion 941 of the sliding groove 94, the second end of the ejector rod 93 is abutted against the rotary disc 92, and the sliding groove 94 is provided with a plurality of parallel sliding groove openings 942 with one-way openings. More particularly, the head of the top rod 93 is provided with a plurality of pointed protrusions, and the opposite surfaces of the rotary disc 92 and the sliding groove 94 are also provided with concave-convex engaging structures.

When the telescopic device is used, the ejector rod 93 extending out of one end of the insertion hole 12 in the first glasses leg 19 is pressed, the ejector rod 93 moves along the sliding groove 94 to press the rotary disc 92 to move downwards, when the meshing part of the rotary disc 92 and the sliding groove 94 is separated, the point-shaped protrusion at the head of the ejector 4 rod 93 is in contact with the inclined surface of the rotary disc 92 to generate radial force to force the rotary disc 92 to rotate, the telescopic body 91 abutting one end of the rotary disc 92 is compressed, and the spring 90 on the outer side of the telescopic body is in a compressed state. At this moment, the utility model discloses the lens of glasses is in primary position.

When the ejector rod 93 is pressed again, the pointed protrusion at the head of the ejector rod 93 is separated from the inclined plane of the rotary disc 92, the rotary disc 92 is rotated by radial force, the meshing part of the rotary disc 92 and the sliding groove 94 is overlapped, along with the extension of the spring 90, the glasses lens of the glasses of the utility model reaches a secondary position.

For example, if a-10D lens is advanced 50mm from a primary position to a secondary position, then the effective lens power obtained according to equation (4):

P₂＝P₁/(1-d₂P₁)

＝(-10D)/(1-[0.05×(-10D)])

＝(-10D)/1.5D

＝-6.67

thus, the final-6.67D was reduced by 3.33D compared to the previous-10D, which represents a +3.33D reduction in the required degree of modulation.

As another example, if a-8D lens is advanced 40mm from the primary position to the secondary position, the effective lens power obtained according to equation (4):

P₂＝P₁/(1-d₂P₁)

＝(-8D)/(1-[0.04×(-8D)])

＝(-8D)/1.32D

＝-6.06D

thus, the final-6.06D obtained was reduced by 1.94D compared to the previous-8D, which represents a +1.94D reduction in the degree of adjustment required.

As another example, if the-5D lens is advanced 60mm from the primary position to the secondary position (as shown in FIG. 1), the effective lens power is obtained according to equation (4):

P₂＝P₁/(1-d₂P₁)

＝(-5D)/(1-[0.06×(-5D)])

＝(-5D)/1.3

＝-3.85D

thus, the final-3.85D obtained was reduced by 1.15D compared to the previous-5D, which represents a +1.15D reduction in the degree of adjustment required.

From above-mentioned three example, use the utility model discloses a glasses that improvement thought designed can realize inhibiting the technological effect of myopia deepening, specifically reaches following benefit:

first, only one set of glasses is used, so the cost is low. Normal appearance, simple and safe use. The adaptability is high by using the same prescription lens. And the optical deformation generated by the bifocal and progressive lenses is not used, so that the wearer feels more comfortable.

Second, the appearance of the secondary site is apparent when used, helping parents to supervise and improve compliance.

Third, this method provides maximum range of vision without distortion and minimum time required for reading, as compared to a method using only one kind of fixed glasses.

Fourth, the advanced prescription myopia lenses reduce the book's image somewhat, visually causing the distance the eye is looking at the book to be increased, and the need for eye focus adjustment to be correspondingly reduced.

Fifthly, when the front frame and the myopia lens are moved forward, the user can move the book document forward so as to continue reading the whole document, and the document reading distance is increased, so that the focusing and adjusting pressure of ciliary muscles inside eyes can be reduced, and the myopia deepening can be slowed down.

Sixth, when the user keeps the head and the body upright, the front frame and the myopic lens which are horizontally pushed out and the upper frame edge of the front frame still stay at the original level of the original position, so that the user can be helped to read more easily through the myopic lens in the front frame which moves forwards and is upright at the same eye level line by the minimum eye focusing adjusting force and the minimum external internal rotator contraction force.

Seventh, when the front frame and the near vision lens are moved forward, the light on the book is affected by the lens moved forward, the base prism effect is generated, and the book seems to move upward, so that the undesirable phenomena of downward looking of eyes, head lowering, reading distance lowering and the like are effectively reduced.

Eighth, when both the front frame and the near vision lens are moved forward, the light in the book is affected by the moved forward lens, creating a base-in prism. As a result, the user can keep the single image of both eyes without rotating both eyes as much. Reducing pronation reduces the regulation pressure at the same time, because of the physiological mechanism of the triple linkage.

Ninth, when the front frame and the near vision lens are moved forward to the secondary position, the light from the book image becomes less diffused after passing through the lens, so that the user can focus the book image with less focusing adjustment force.

Tenth, use the utility model discloses the time is not too poor at secondary position's sight of seeing far away, so need not to move forward frame and lens backward and see far away to primary position, it is very convenient.

In addition, fig. 12 illustrates the improved structure of the present invention on the left and right lenses, and it should be noted that the improvement can be applied to the design of glasses with or without frames. The shape of the lens will be designed to the required base length so that peripheral images that do not pass through the lens will be focused directly onto the peripheral retina when reading. (to counteract the hyperopic defocus phenomenon of the peripheral retina)

As can be understood from the illustration, the outer side edges of the left and right lenses 30 are symmetrically provided with grooves 301 (only one groove is illustrated in the figure, and the other side is the same) inward along the base line direction indicated by the dotted line, the depth range of the groove 301 and the outer side edge is d, and the value range of d is:

70mm<d<100mm

with this configuration, since the effect of the lens edge power is reduced, the adjustment required at the secondary position is also reduced compared to when reading at the primary position.

The above concept can also be applied to the provision of a plurality of grooves in the side of the lens, and the adjustment can be achieved at different positions in the figure.

The previous description of the preferred embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Glasses for inhibiting myopia progression comprise a glasses frame and glasses legs, and are characterized in that the glasses legs comprise a first glasses leg and a second glasses leg, the second glasses leg is connected between the glasses frame and the first glasses leg, the second glasses leg can move relative to the first glasses leg in a telescopic mode, and the relation between effective power and lens power between the movement of the glasses frame relative to an eyeball from a primary position to a secondary position after stretching is as follows:

P₂＝P₁/(1-d₂P₁)

0<d₂<60mm。

2. glasses for the inhibition of myopia progression according to claim 1,

3. Glasses for the inhibition of myopia progression according to claim 2,

4. Glasses for the inhibition of myopia progression according to claim 3,

5. Glasses for inhibiting the progression of myopia according to claim 4,

6. Glasses for the inhibition of myopia progression according to claim 3,

7. Glasses for the inhibition of myopia progression according to claim 3,

8. Glasses for the inhibition of myopia progression according to claim 1,

70mm<d<100mm。

9. glasses for the inhibition of myopia progression according to any of claims 2 to 7,

70mm<d<100mm。

10. glasses for the inhibition of myopia progression according to claim 9,

11. Glasses for the inhibition of myopia progression according to claim 10,