Vision testing system

Abstract

A method and apparatus are provided for testing the vision of a human subject using a series of eye tests (310). A test setup procedure (312) is run to adjust the settings of a display device (1914) such that graphic objects displayed on the device (1914) conform to a pre-defined appearance. A series of preliminary tests (314), static tests (316) and dynamic tests (318) are displayed on the device (1914), and the responses of the subject are recorded. The tests (310) may be run remotely, for example over the Internet. No lenses are required to run the tests (310).

Description

technical field [0001] The present invention relates generally to vision testing of subjects, and more particularly to lensless vision testing using a video display screen. Background technique [0002] Vision is intimately involved in almost every aspect of a person's daily life. If a person's vision is reduced, usually the person's quality of life is also reduced. [0003] Vision can be broken down into three conceptual layers, generally seen in Figure 1. The optical layer 100 provides focusing of light in the photosensitive layer of the tissue at the back of the eye called the retina. The functional layer 102 (formed by the retina) contains photoreceptor cells that can detect various colors, movements and forms and convert them into nerve impulses that are sent to the brain. The third layer is the perception layer 106, which is the part of the brain that makes images from the light information sent from the eyes. [0004] During the last century, many tests to measure...

AI Technical Summary

Problems solved by technology

Such devices are often quite expensive

People who are immobile or live far from cities or large towns are therefore disadvantageously lacking in optometry services

When an optometrist visits, usually only a few lenses are used for diagnostic purposes, and as such, the examination performed may not be as comprehensive as that performed with the typical devices mentioned above

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