Evaluation of the Hahn's Pseudoisochromatic Plates.

Hahn, Chun Suk

Original Article

Journal of the Korean Ophthalmological Society 1977;18(4):297-298.
Published online April 1, 1977.

Evaluation of the Hahn's Pseudoisochromatic Plates.

Chun Suk Hahn

Hahn's Eye Clinic, Seoul, Korea.

한식색각검사표에 (韓式色覺檢査表) 대한 검토

한천석 ( Chun Suk Hahn )

Abstract

72 subjects with defective color vision that was detected by the screening test among 633 high school students were examined using a printed sample of the author's plates and other 7 kinds of color tests including Ishihara's, Okuma's. Tokyo Medical College'sand H-R-R's plates, Farnsworth's Panel D-15 Test. Hahn's Double 15-Hue Test and Hahn's Color Choice Test (modified City University Colour Vision Test). Results of examination in classifying the types and estimating the extent of color defects using the author's plates were compared with the summarized final results obtained with 8 kinds of tests and the rate of coincidence of results both in type and in extent was found to be 33.3% in the author's plates, 37.5% in Okuma's, 36.1% in Tokyo Medical College's and 27.8% in H-R-R's plates.