This is to report the figures of the second survey of causes of blindness on 94,799 eye patiens. from various hospitals (total 17 in number) in Korea during 1971 and 1972.
Blindness is defind as visual acuity for distance of 0.1(20/200) or less in the, better eye with best correction. Representation of diagnosis of ocular af fection is based on examination of ophthalmologists, and the Standard Classification of Causes of Blindness recommended by the International Association. for the Prevention of Blindness (revised) is, applied. .
Estimated number of blindness is 1,763(1.9%). Proportion of blindness by causes indicates: Senile cataract (30. 26%), Systemic diseases (15.02%), Other diseases (13.64%), Glaucoma (9.58%), Injury & poisoning (9. 13 %), Refractive errors (8.22%), Congenital diseases (5.64%), and Infectious diseases (5.14%), etc.
Rate of blindness by site and type of affection is shown as: Lens disorders (cataract), (36.10%), Retinal diseases (13.18%), Optic nerve diseases (9.33%), Corneal diseases (8.70 %´), Refractive errors (8.16 %), Glaucoma (7.87 %/), & Other diseases (6.24%o), etc.
Comparisons with other statistics on causes of blindness of the inland and the foreign countries are attempted. Evaluation of results and problems establishing a more detailed and nationwide survey in future are briefly discussed in comment.
(This survey and report are supported by a Grant from the Research Institute of Medical Science of Korea, Inc.)
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