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The 21 point vision analysis without a phoropter.
1Illinois College of Optometry.
Journal of the American Optometric Association
|October 1, 1975
Summary
This study presents objective vision tests for individuals with age, intelligence, or communication challenges. These methods provide accurate vision performance measurements and appropriate eyeglass prescriptions when standard refraction is not feasible.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- Standard eye exams, such as 21-point analytical refraction using a phoropter, can be challenging for certain patient groups.
- Age, cognitive ability, and communication barriers can impede a patient's ability to cooperate with traditional eye examination procedures.
Purpose of the Study:
- To introduce a series of valid and objective tests for assessing vision performance.
- To enable appropriate eyeglass prescription for individuals unable to complete standard refraction.
Main Methods:
- Development and validation of alternative objective vision testing protocols.
- Application of these tests in individuals with limitations in undergoing phoropter-based refraction.
Main Results:
- The proposed tests provide reliable measures of visual function.
- Accurate prescriptions were achievable for the target patient population using these methods.
Conclusions:
- Objective vision testing offers a viable alternative for patients who cannot tolerate conventional refraction.
- This approach expands access to essential eye care for vulnerable individuals.