Method and apparatus for measuring vision function

Abstract

A system for replicating a standardized visual acuity test, such as the 20' Snellen test may comprise a binocular viewer attached to a smartphone. A binocular viewer may comprise a housing comprisinga pair tube covers having voids allowing for viewing through a pair of lens tubes with each lens tube in visual communication with a second lens, a first lens, an aperture and a front cover. The optical systems use an artful combination of front and back lens surfaces, demagnification and other systems to faithfully replicate the sight lines perceived by a user of a traditional 20' test. The system also allows for the incorporation of other tests conducted with both eyes including Color Sensitivity and Contrast, furthermore by placing a deformable, tunable lens between the second lens and theeye the device serves as an ophthalmic refractometer, allowing a Spherical Equivalent refraction estimate for each eye.

Description

[0001] Related Patent Applications and Incorporation by Reference [0002] This application claims the benefit of and priority to US Application 62811492, filed February 27, 2019, the contents of which are incorporated herein. [0003] The patent application for this invention is a continuation-in-part (CIP) of U.S. Application 16 / 176,631 Smart Phone Based Virtual Visual Charts for Measuring Visual Acuity filed on October 31, 2018, which requires Provisional Patent Application 62 / 579,558 in interest and priority date. [0004] This invention patent application is a continuation-in-part (CIP) of patent application 16 / 276,302 filed on February 14, 2019, which is a CIP of application 15 / 491,557 filed on April 19, 2017, now February 2019 Patent 10206566, issued on the 19th, claims the benefit of provisional patent application 62 / 409,276, filed on October 17, 2016. [0005] In the event of any conflict between the inventive disclosure in this application and the disclosure in a re...

AI Technical Summary

Problems solved by technology

The shortcoming of existing technology is that a parent, teacher, or caregiver may wish to quickly and affordably test a child's vision without the oversized paper eye charts of current technology or a clear, properly lit 20-foot space

[0012] Recently, there have been a plethora of free mobile apps (Apps) claiming to measure vision, but to replicate the 20’ Snellen test, the phone screen would have to be held away from the user, making the test inconvenient and, in the case of children, nearly impossible

Also, given the fact that there is no limit to the tester's distance from the smartphone in these free apps, the results are highly inaccurate compared to the enforced distance limit of the currently disclosed embodiment

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