J Korean Ophthalmol Soc.
1967 Jun;8(1):51-54.
Accuracy of Some Korean Test Charts and "Hahn's New Test Chart"
- Affiliations
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- 1Hahn Eye Clinic, Koreaw.
Abstract
- The test types used in three Korean test charts and "Hahn's New Test Chart" were measured in detajl to determine the accuracy with a caliper and micrometer which minimal limit of measurement was 1/10,000 inch. The rate of accuracy of three Korean test charts was noted as 82.3%, 72.8%, and 77.2% each, whereas that of the Hahn's New Test Chart was 98.9%.
