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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 development beyond the length that provides approximately optimal focus of distant objects, resulting in progressively pronounced myopia

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

Embodiment

[0106] Initial studies / comparative examples

[0107] In previous studies, proof-of-concept glasses using diffusing color filters attached to the lens surface were found to slow axial length growth in subjects, but many puzzles remained. The color filter used was a commercially available Bangerter Blackout Foil ("BOF"). These are diffusers made of thin flexible electrostatic vinyl film trimmed to match the lens shape and adhered to the right lens. The "foil" used was "BOF-0.8Acuity of 20 / 25" which, as the name suggests, is nominally optimal for corrected visual acuity down to 20 / 25. In practice, however, the acuity of subjects that can be best corrected in the range 20 / 15-20 / 20, field tested with BOF-0.8 filters in the range 20 / 30-20 / 40 . Subjects in this study wore diffusers unilaterally on a single eye because of the greatly reduced acuity it produced and were concerned about the tolerability and safety of wearing glasses that would reduce binocular acuity to 20 / 30-40....

Embodiment 2

[0118] Example 2: Prototype II

[0119] The goal of Prototype II was to produce a lens that would allow best corrected visual acuity measured in the 20 / 15 to 20 / 20 range, but be equal to or better than the BOF-0.8 filter. To this end, Prototype II lenses were produced by modifying the Prototype I dot pattern to include a small central clear area. The dots are formed on a square grid pattern with a pitch of 0.55 mm. The clear aperture is formed in a circular shape with a diameter of 3.8 mm. exist Figure 9 A photograph of the Prototype II lens is shown in .

[0120] When the glasses are worn, the clear area is positioned to match the pupil, allowing the wearer to see through the clear area when looking straight ahead. Subjects with a best correction of 20 / 15-20 / 20 tested 20 / 15-20 / 20 when wearing Prototype II and looking through the transparent area to read the eye chart.

[0121] The clear zones of Prototype II and Prototype I were tested by recruiting a small number of ...

Embodiment 3

[0122] Example 3: Prototype III

[0123] Additional improvements are explored to maximize both tolerability and efficacy. It is generally believed that the larger the transparent area, the more tolerant the prototype, but it was also hypothesized that increased peripheral contrast reduction might improve efficiency. Therefore, these two variants were tested, which resulted in another prototype: Prototype III. Like Prototypes I and 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 greater contrast reduction outside of the clear region. Specifically, the clear aperture was enlarged to 5.0mm diameter, and the square grid pitch was reduced to 0.365mm. Dot size remains the same as Prototype II. exist Figure 10 A photograph of the Prototype III lens is shown in .

[0124]The design goal was to develop a prototype that achieves good vision that is enjoyable and comfortable...

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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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