| Accuracy of Some Korean Test Charts and "Hahn's New Test Chart". |
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Chun Suk Hahn |
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Hahn Eye Clinic, Koreaw. |
| 시판시시력표와 (市販試視力表) 한식신시시력표의 (韓式新試視力表) 정확도 (正確度) |
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한천석(Chun Suk Hahn) |
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| Abstract |
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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%. |
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