Ophthalmic lenses for treating myopia

A technology of ophthalmic lenses and glasses, applied in the direction of glasses/protective glasses, glasses/goggles, applications, etc.

Active Publication Date: 2019-05-03
UNIV OF WASHINGTON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in myopic individuals, the relative axial length of the eye to overall eye size continues to increase during developme

Method used

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  • Ophthalmic lenses for treating myopia
  • Ophthalmic lenses for treating myopia
  • Ophthalmic lenses for treating myopia

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0105] Example

[0106] Initial study / comparative example

[0107] In previous studies, it was found that proof-of-concept glasses that use diffuse color filters attached to the surface of the lens can slow down the subject’s axial length growth, but there are still many problems. The color filter used is a commercially available Bangerter light-shielding foil ("BOF"). These are diffusers made of a thin flexible electrostatic vinyl film that are trimmed to match the shape of the lens and adhere to the right lens. The "foil" used is "BOF-0.8Acuity of 20 / 25", as the name implies, it nominally best reduces the corrected vision to 20 / 25. However, in fact, the subject's acuity can be best corrected in the range of 20 / 15-20 / 20, and the BOF-0.8 filter is used for field testing in the range of 20 / 30-20 / 40 . Participants in this study wear a diffuser on a single eye unilaterally because the acuity produced by it is greatly reduced, and they are worried that the tolerance and safety of ...

Example Embodiment

[0118] Example 2: Prototype II

[0119] The goal of Prototype II is to produce a lens that can allow the measurement of best corrected visual acuity between 20 / 15 and 20 / 20, but has an effect equal to or better than that of the BOF-0.8 filter. For this reason, the prototype II lens was produced by modifying the prototype I dot pattern to include a small central transparent area. The dots are formed on a square grid pattern with a pitch of 0.55mm. The clear aperture is formed in a circular shape, which has a diameter of 3.8 mm. in Picture 9 A photo of the prototype II lens is shown in.

[0120] When wearing glasses, the transparent area is positioned to match the pupil, allowing the wearer to see through the transparent area when looking straight ahead. The subjects with the best correction of 20 / 15-20 / 20 when wearing Prototype II and reading the eye chart through the transparent area, the test was 20 / 15-20 / 20.

[0121] By recruiting a small number of subjects and letting them w...

Example Embodiment

[0122] Example 3: Prototype III

[0123] Explore other improvements to maximize tolerance and effectiveness at the same time. It is generally believed that the larger the transparent area, the more tolerable the prototype, but it is also assumed that increasing the peripheral contrast reduction may improve efficiency. Therefore, these two variables were tested, which produced another prototype: prototype III. Like Prototype I and Prototype II, Prototype III has no spectral light filtering. The dot pattern of Prototype III was modified to include a larger clear aperture than Prototype II and a greater reduction in contrast outside the transparent area. In particular, the clear aperture is expanded to 5.0mm in diameter, and the square grid spacing is reduced to 0.365mm. The point size is consistent with prototype II. in Picture 10 A photo of the prototype III lens is shown in.

[0124] The design goal is to develop a prototype that achieves good vision that makes children and ...

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Abstract

Eyeglasses are disclosed that include eyeglass frames and a pair of ophthalmic lenses mounted in the frames. The lenses include a dot pattern distributed across each lens, the dot pattern including anarray of dots spaced apart by a distance of 1 mm or less, each dot having a maximum dimension of 0.3 mm or less, the dot pattern including a clear aperture free of dots having a maximum dimension ofmore than 1 mm, the clear aperture being aligned with a viewing axis of a wearer of the pair of eyeglasses.

Description

technical field [0001] The invention features ophthalmic lenses for treating myopia, methods for forming such lenses, methods for using such lenses, and methods for monitoring the efficacy of such lenses. Background technique [0002] The eye is an optical sensor in which light from an external source is focused through the lens onto the surface of the retina, an array of wavelength-dependent photosensors. Each of the various shapes that the lens of the eye can take is associated with a focal length in which external light rays are optimally or nearly optimally focused to produce an inverted image on the surface of the retina, which corresponds to the external image. In each of the various shapes that the eye lens can take, the eye lens optimally or nearly optimally focuses light emitted or reflected by external objects located within a range of distances from the eye, and is less than ideal Objects located outside this distance range will not be in focus or will not be in...

Claims

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Application Information

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IPC IPC(8): G02C7/02G02C7/04G02C7/16G02C7/10
CPCG02C7/022G02C7/027G02C7/061G02C7/10G02C7/04G02C7/16A61B3/1005B29D11/00326B29D11/00009G02C2202/24G02C7/02G02C7/021B29D11/00336
Inventor J·尼茨J·库申贝克M·尼茨
Owner UNIV OF WASHINGTON
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