JPH02500249A - unidirectional eye shield - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] unidirectional myopia FIELD OF THE INVENTION The present invention relates generally to instruments particularly useful in the diagnosis and treatment of eye conditions. . In particular, the present invention is useful for treating strabismus, heterotropia, horia), various eye conditions such as cyclophoria This invention relates to an instrument useful as an ophthalmological myopic device to assist in diagnosis.

Eye conditions involving muscle imbalances or misalignments, such as overt deviations (anisotropia) or latent deviation (tropia) can be corrected with the use of appropriate orthotic devices or treatment. It is a very common disorder that can be treated.

However, these conditions may be inactive or in the early stages of progression. In some cases, its presence is not readily apparent to the individual patient. problems like this Identification and correction is important because the diagnosis typically depends on the skill of the physician and the that it is considerably influenced by the degree of familiarity with the symptoms of the often difficult condition. Because of the truth, it becomes more difficult.

Occult strabismus or strabismus is a condition involving an underlying irregularity of the eye. Identify latent strabismus One test commonly used by doctors for this purpose is the so-called "cover test". . In a cover test, one of the patient's eyes is covered or "occluded" and the patient The person is asked to look or "fixate" on a particular point with one eye. cover also When the occluded eye is removed, the irregular eye often makes accommodative movements; The movement is specific to a given defect, for example in the case of obliques there is a 'fusion' movement. , and in the case of overt deviation, it is a "re-fixation" motion.

To induce re-gazing behavior, the nearsighted eye should be repositioned to cover the other eye. It is necessary to

Unfortunately, with traditional myopia, eye realignment movements are often fast and difficult to discern. Cover testing requires a very high degree of experience and ability on the part of the observer because it is difficult to is necessary. This difficulty may be due to the fact that myopia itself has a negative effect on the perception of certain eye movements. This is related to the fact that the observer's ability tends to be blocked. For example, latent strabismus If this is the case, the occluded eye exhibits a characteristic movement, but this movement is unclear due to myopia. and therefore will not be discernible by the observer.

Additionally, some types of alignment deviations may not be easily diagnosed by traditional cover tests. stomach. For example, in rotational plagioplasty, the eyes move around an anterior/posterior axis. In vision, the range of eye movement is very small. Using a conventional myopic lens, this small Movement is generally not discernible. For this reason, the diagnosis of rotational tropism is usually very Requires complex equipment and/or diagnostic techniques.

One type of myopia designed for this problem is the so-called frosted glass. He is short-sighted. As the name suggests, frosted glass myopia is partially opaque. Use frosted glass instead of a fully opaque shielding surface. but, Matte glass myopia is less successful. The reason is that matte glass Although it is very useful for normal myopic children, it is different from that seen in conventional myopic children. With many of the same drawbacks, frosted glass significantly obstructs the viewer's view and conditions in which a transparent rather than translucent field of view is required to detect minute eye movements. There's no real way to detect it.

Many other methods and devices are also known to assist in diagnosing latent or overt strabismus. ing. One such device is the Maddox Rod J. Rod) evaluates the type or amount of ocular irregularity based on information provided by the patient. It is an instrument that measures the value or measurement. This is an instrument that measures subjective displacement. Ji Other devices, such as the knobtophore, can be used to subjectively and objectively differentiate the type of ocular irregularity and can be used to determine the amount of growth. Unfortunately, these instruments and methods are inherently are highly subjective or require complex and expensive equipment. In any case, this All of these devices allow close (direct) viewing of the eye through an occluder while the eye is occluded. It is impossible to guess.

The above problems tend to undermine the effectiveness of known methods and instruments for testing ocular irregularities. These are just a few of the many issues that are facing the issue, but not all of them. Other highlights There are also issues that need to be addressed. However, the above problem is well known in the technical field. Suffice it to show that hitherto existing instruments and methods are completely unsatisfactory. .

For improved methods and instruments for diagnosing ocular irregularities and related muscular conditions. In view of the need for An object of the present invention is to provide a new eye shield that reduces or alleviates the problem.

Other objects of the present invention are that it is inexpensive, easy to use, and treats patients to the same extent as conventional instruments. The objective is to provide an instrument that relies on the subjective response of the individual.

The more specific purpose is for the clinician to introduce the patient through the occluder while the eyes are occluded. By providing an eye shield that makes it possible to observe people's eyes in detail and without any inconvenience. be.

Another object of the present invention is to treat oblique and rotational oblique disorders, which have been difficult to diagnose up to now. The objective is to provide an instrument that enables diagnosis.

Yet another object of the invention is a self-contained hand-held instrument that The object of the present invention is to provide a device that can be easily carried without the need for a machine.

That is, in its most general and comprehensive scope, the present invention provides connected to the body, occluding at least one of the individual's eyes but allowing observation of the occluded eye. 2. Apparatus including means for enabling. As used herein, the term "shielding" words that cover an individual's eyes and prevent the occluded eye from seeing a target that is being seen by another eye. means the act of restricting one's field of vision. Therefore, the term occluded eye is , viewing the target with the covered eyes is prevented by the device, but the target is not covered. Not meant an eye covered with a device so that it can be seen by another eye.

In a more particular embodiment of the invention, the shielding means comprises a reflective transparent material attached to the support. discs formed from materials and with one side of the disc opaque compared to the other side. comprising means connected to a support for "Reflective" used here The term "transparent material" means a material that reflects light and transmits light. That is, , light that is directly incident on the surface of a material, such as the surface of a mounted disk, will be reflected. Also, the material is such that a portion of the incident light is transmitted through the disk. Illustrated reflection The transparent material is a material commonly used in the manufacture of two-way mirrors and the like.

Such reflective transparent materials are used to manufacture lenses, plate glass, window glass, etc. If one side of the glass or window pane is shined with a stronger light than the other side, the illuminated side will look like a mirror. Therefore, it becomes opaque to other surfaces. On the other hand, the reflective transparent material is viewed from the non-irradiated side. The object appears transparent, and the observer can see the object from the non-illuminated side to the illuminated side through the glass. You can see it.

Preferably, therefore, the opacifying means is such that when irradiated, one side of the disk is not irradiated. a light source connected to the support such that it is opaque to the other surface of the disk; Ru. More conveniently, the light source is an axially extending light source located along the peripheral part of the disc. located on the expanding flange.

However, the light source does not necessarily have to be attached to the actual fixture. All you need is One side of the screen is more irradiated than the other side. This is preferably opaque. providing a light source directed to the surface of the eye occluder disc to be illuminated or to the patient's eye; This is achieved by

There are no particular limitations on the size, shape and thickness of the shielding disc. All you need is Make sure the dimensions of the disc are large enough so that the disc can be used to obstruct the view. It is to make the dimensions. Therefore, in a broad sense, a disk is generally about 15 MM. to, for example, the size of the patient's face. The smaller dimension is one In general, it is limited by the size of an individual's pupil, and the larger size is limited in practical terms. be done. A more preferable dimension is about 2 to 12cπ, and most preferably about 7cπ. stomach. The thickness of the disc is not particularly limited either, and reflective transparent materials commonly used for manufacturing. Depends on the type and amount. In addition, the disc should be In fact, it can be of any shape, such as rectangular, circular, annular, rectangular, etc. It can be any shape.

In some embodiments, the device of the invention includes a support-mounted device that positions the shielding means on the eye. preferably includes means attached to it. Useful positioning means include, for example: If the instrument is intended for hand-held self-contained use, it shall have a handle. however, The utility of the instrument of the invention is not limited to hand-held instruments, but may also be used with other positioning means. For example, straps, goggles, frames, helmets, patient distancing devices, etc. Includes ingredients, etc.

It reflects at least about 30% of the incident light and transmits at least about 5% of the incident light.

made of such a material if at least about 30% of the incident light is reflected One side of the disk is easily made opacified by reflection of the incident light on that side. Sara transmitting at least about 5% of the incident light to the unilluminated, non-opacified surface of the disk. At this point, the object can be easily seen by the observer through the disc material.

However, in more preferred embodiments, the reflective transparent material reflects at least about 60% of the incident light. % and transmits at least about 10% of the incident light.

In a more preferred embodiment, the reflective transparent material reflects about 80% of the incident light and reflects about 20% of the incident light. Transmit %.

Of course, the entire surface of the opacification means must be composed of reflective transparent material. There isn't. All that is required is for the observer to pass through a window of sufficient dimensions, e.g. Ensure that a sufficient portion of the disc is constructed so that the eye can be observed. That is. Therefore, in some applications, the center or bull's eye of the disc Only the 5-eye) part is formed that way, the rest is completely opaque and non-transparent. It may be made of a flexible material. The central part of the disc is made of completely opaque non-transparent material. The reverse configuration, where the surrounding area is made of reflective transparent material, may also be desirable in some applications. It would be a shame.

A useful reflective transparent material that can be used in the present invention is aluminum - Known as polyester reflective film.

This material is also known as reflective window film or metal vaporized polyester film. For example, Madic Film.

Film) (Woeburn, MA) .

Madico Film Metallized Polyester sold under the trademark R3220X One type of film product works well in the practice of this invention. R3220X The film is about 1 mil thick and (at 550 na) about 1 mil of incident light It transmits 6% and reflects about 84%.

Other uses for this material include two-way mirrors, tinted glass in automobiles, as discussed earlier. and other types of windows.

To make discs useful in accordance with the present invention, aluminum-polyester It is desirable to mount the sheet between layers of transparent material such as glass or plastic. Delicious. This is simply a sheet of aluminum-polyester material that is is achieved simply by layering between transparent layers of plastic, in this case aluminum The number or thickness of polyester sheets can affect the reflection/transmission parameters of the entire disc. The data is determined. For example, a commercially available aluminum-polyester sheet Dico Film, Wooburn, MA) It, approximately 60-95% incident light reflection It is considered to have emissivity. Combining multiple layers of such materials creates a reflective Behavior increases proportionally. Therefore, for example, one sheet reflects approximately 80% of the incident light. When two aluminum-polyester sheets are used, a total reflectance of about 96% [ 80%+(20%×80%)] is obtained.

As noted, the transparent layer, if used, is typically glass or plastic. It consists of a Convex lenses, although flat glass or plastic are usually standard Alternatively, the use of lenses such as concave lenses is not excluded. Furthermore, expansion, The use of lenses with a reflective or prosmatic effect may also be used in some cases, e.g. This is very useful when the eye to be examined has significant refractive error.

In a most preferred embodiment, the device of the invention comprises: (a) a handle region and an eye occluder region; and the eye shield area is a self-contained handheld support of dimensions effective to occlude the field of view. (b) a disc of reflective transparent material mounted within the eye shield area; (c) an energy If you are given a light source, place it on the side of the disk so that it illuminates one side of the disk. (d) a switch mounted on the support and included in the support; A means of energizing a light source Contains. , As used herein, a "self-contained handheld" housing is a housing that is easily portable. Easy to carry, without the need for complicated accessories or external installation locations, such as wall plugging. means a housing with dimensions that allow it to be handled with one or both hands. this is, For example, use a light source placed on one side of the disk to illuminate one side of the disk. using a housing that contains a self-contained energy source, such as a battery, so that This is achieved by

Detailed descriptions can be better understood and recognized in the technical field Thus, an example containing the more important features of the invention has been presented above. Of course, as explained below. As will be clear, there are other features of the invention which also form the subject matter of the claims. .

These objects, features and advantages of the present invention will be further explained below with reference to the accompanying drawings. It will become clear from the detailed description. In the diagram, the same symbols are the same. It shows the elements of

FIG. 1 is a plan view of a preferred device according to the invention.

2 is a partially sectional side view taken along line 2-2 in FIG. 1. FIG.

FIG. 3 is an enlarged sectional view of the portion labeled 3 in FIG. 2.

Referring now to the drawings, FIG. 1 shows a typical device in accordance with the present invention. It is. The appliance is self-contained defining a /% lens area 4 and an eye shield area 6. It includes a hand support 2. The eye shield area is a shield attached to the annular frame 10. It includes a shielding means 8. The shielding means 8 is mounted within the annular frame 10 of the support 2. The disc 12 includes a disc 12 that has been removed.

The handle 4 has an elongated shape and is approximately rectangular in shape.

The shielding area 6 is generally an extension of the handle 4 and preferably extends to the axis of the handle 4. It has a cylindrical shape with an axis perpendicular to the surface. The shielding area 6 is annular but completely It is hollow and open on both sides, thus opening on both sides 14.16 of the disc 12. There is.

As shown, the disk 12 includes a flat glass 22. Sandwiched between two layers of 24 The aluminum-polyester layer 20 includes an aluminum-polyester layer 20.

The aluminum-polyester layer 20 consists of two aluminum-polyester layers 2 It consists of 6.28. The disc 20 fits precisely on the inner surface of the annular frame 10. It is installed so that it fits. The disc 20 has two annular retaining members 30.3 2 and held in place by the outer frame of the annular frame 10.

Figure 2 shows a means to make one side of the disk more opaque than the other side. and the opacification means 34 includes a light source 36 and an energy supply means in the form of a battery 36. Illustrated as stages and switches 40. In this regard, a 2.2v light bulb or and two 1.5v batteries were found to work well.

As will be understood later, the annular frame 10 of the support 2 comprises an axially extending ring. The annular flange 42 , 44 is defined along the circumferential portion of the disk 120 . It extends in the axial direction. One of the flanges extending in the axial direction, flange 42, is Its circumference is slightly thicker than the other flange 44 (adjacent to the surface of the disk 12, It is suitable for positioning the light sources 36 in juxtaposed positions. as shown In addition, a light source 36 is hidden within the flange 42 to illuminate one side 14 of the disk 12. I'm deeply involved.

Because of the shielding means of the present invention, latent strabismus can be quickly corrected by using the above-described device. Can be diagnosed. Combining aluminum-polyester sheet and irradiation light source A quick, simple and easy medical test for deviated and irregular skewed eyes. inspection becomes possible. As long as both eyes are looking at the same image, it will not manifest, and one eye will see the other. This condition is insidious because it becomes manifest when the eye receives a different image than the one seen. Ru.

Diagnosis is carried out by bringing the shielding device in front of the eyes, covering one side of the disc, i.e. The illuminated side becomes opaque, but the less illuminated side, i.e. the non-illuminated side, becomes transparent. As in, move the means. In other words, when light is applied, the illuminated side of the eye shield is above the eye. the patient's field of view is occluded, while the observer looks at the occluded eye from the transparent side. You can see it directly. In other words, this instrument allows one cover test for diagnosis. However, the position and movement of the occluded eyes can be constantly observed, which is different from conventional methods. This technique greatly improved the accuracy of eye movement diagnosis, which was clearly not easy using eye shields. (There is an advantage that it can be done.

When in use, the indoor lighting should be dim. Turn on the light source of the eye occlusion and place the instrument on the patient. patient to look at the fixation target with the unobstructed eye.

This allows observation while the patient's vision is very reduced due to the covered eyes. The person directly observes the patient's occluded eye. Plagioplasty is due to the splitting of the fusion. It becomes clear. The device can also be used to replace traditional shields by removing the eye shield or turning off the light source. Can be used as an eyepiece to observe fusion or re-gazing movements of the uncovered eye .

The instrument can also be used to diagnose lateral deviations, such as in the case of anisotropia.

For patients with anisotropic vision, the clinician may Observe the re-gaze movement. Alternate cover test to detect the amount of anisotropy and the amount of tropia In this case, the device of the present invention is moved back and forth between the right eye and the left eye. Observe the position and movement of each eye. Eye shields are used to quantify ocular irregularities. May be used in conjunction with grids and/or prisms. The prism is incorporated into the eye shield. It can be used as a separate tool or as a separate tool from the eye shield.

In some cases, such as cyclotrobia or rotational plagioplasty, which have not previously been covered by a cover test, For diagnosing conditions such as Let the eye test and see how it responds. If you have cyclotropia or rotational oblique position, the front and back A twisting movement of the eye around its axis is observed. Observations should be made using magnifying aids. more promoted. Auxiliary devices may be incorporated into the eye shield or added to the eye shield. It may also be used as an independent tool.

By using the present invention, a physician will typically receive one or more benefits. There will be. For example, tests performed by an ophthalmologist, optometrist, or orthodontist may Due to the small dimensions of the holder itself, it can be used in a very simple manner, which is quick, efficient and convenient. It can be done in a formal manner.

As mentioned, the device allows for direct observation of the eye with the eye covered. Therefore, when you remove the eye cover, you will see a very rapid movement of the eye returning to its original position. It can be determined whether the eye is deviated or not without the need to This allows the View details of the deviated eye by comparing observations made with and without cover. It is possible to detect strabismus and determine whether there is strabismus or other types of strabismus. Becomes Noh.

For purposes of explanation and illustration, the foregoing describes particularly preferred embodiments in accordance with the requirements of the present invention. I have given an explanation. However, without departing from the technical scope and spirit of the present invention. (It is recognized that many modifications and changes can be made to both the apparatus and the method.) It will be obvious to business owners.

For example, while self-contained handheld devices are preferred in many applications, the general The opacifying means of the invention can be used with different, less mobile, as long as the properties are preserved. There is no reason why it could not be placed on a different support. Also, the structure and disc species Alternative designs of the disc, including the materials forming the various layers, may depart from the spirit of the invention. It is also clear that it can be used without For example, in this regard, many ( It will be understood by those skilled in the art that suitable modifications can be made. Requests listed below The scope also includes equivalent modifications and changes that fall within the spirit and technical scope of the present invention. be caught.

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Claims (16)

[Claims] 1. (a) a support, and (b) an eye connected to a support and occluding at least one of the individual's eyes; An instrument containing means to enable observation of. 2. The shielding means are (a) a disk formed from a reflective transparent material attached to a support; and Beauty (b) attached to a support to make one side of the disk more opaque than the other side; means of being 2. A device according to claim 1, comprising: 3. further comprising means attached to the support for positioning the shielding means over the eye; 2. The device according to claim 2. 4. 4. The device of claim 3, wherein the positioning means includes a handle. 5. Claim 2, wherein the opacifying means comprises a light source connected to the support. Equipment included. 6. an axially extending flange whose support is arranged along the circumference of the disk 7. The device of claim 6, wherein the light source is located on the flange. 7. The reflective transparent material reflects at least about 30% of the incident light and reflects at least about 5% of the incident light. 3. The device according to claim 2, which transmits %. 8. The reflective transparent material reflects at least about 60% of the incident light and reflects at least about 1 3. The device according to claim 2, which transmits 0%. 9. The reflective transparent material reflects about 80% of the incident light and transmits about 20% of the incident light. Apparatus according to scope 2. 10. Claim No. 1, wherein the reflective transparent material comprises an aluminum-polyester layer. Apparatus described in Section 2. 11. The disc consists of aluminum-polyester sandwiched between transparent layers A device according to claim 10. 12. Claim 11, wherein the transparent layer is made of glass or plastic. utensils. 13. (a) A handle area and an eye shield area are defined, and the eye shield area blocks the field of view. (b) a self-contained handheld support of effective dimensions to (c) when energized, the disk is made of reflective transparent material; (d) a light source placed on the side of the surface so as to illuminate the surface; and (d) a light source mounted on the support. for energizing a light source contained in the support, including a switch attached to the support. means A device comprising: 14. (a) occlude the patient's field of vision with at least one eye, and (b) view the occluded eye. The eye condition of a patient suspected to have strabismus consists of detecting the movements of the eyeballs. How to detect the condition. 15. Only one eye is occluded, and the method uses the unobstructed eye to fixate on a specific object. 15. The method of claim 14, comprising: 16. The patient's visual field is blocked by the device according to any one of claims 1 to 13. 15. The method of claim 14 covering.