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KMID : 0353019710080010089
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Korean Journal of Public Health
1971 Volume.8 No. 1 p.89 ~ p.96
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An Epidemiological Observation on the Causes of blindness Among Out-patients
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Abstract
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618 cases of blindness among 4.377 outpatients were analysed by causes and predisposing factors leading to blindness; those outpatients were registered to the eye clinic of National Medical Center(1.791) from January to December of 1965 and to Kong´s Eye Hospital(2,543) from January to December of 1969. Both hospitals are located in Seoul City.
Following results were obtained by the study;
1. 14.12% of all patients registered was the victims of visual impairment, who had less than one meter finger count vision on either one or both eyes.
2. The sex ratio of male to female for blindness was 1.5:1, which was similar to that of registered patients.
3. 65.2% of the blindness was mono-ocular and 34.8% binoncular.
4. The seasonal occurrence of the blindness showed that 29.4% in summer, 25.1% in autumn, 23.4% in winter, and 22.1% in spring.
5. The leading causes of the blindness for the age group
a. The leading causes of the blindness for the age group of 0-9 years were lesions of cornea and sclera (33.2%) followed by phthisis bulbi or anophthalmos(17.1%), optic nerve atrophy (10.2%), and others (10.2%).
b. For the 10-19 years age group, the major causes of blindness were trauma(28.6%), and following was lesions of optic nerve (16.5%).
c. For the age groups of over 40 years, the most frequent cause of blindness was due to lesions of lins (senile catarat) resulting bilateral blindness.
6. The incidence of blindness by trauma was strikingly predominant among males than females (M:F-3.3:1), and occured most frequently during the age of 5-29 years.
7. According to causes and predisposing factors, it was found that about 60% of all blindness could have been prevented or treated before they became hopeless.
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