Terrien's Marginal Degeneration of the Cornea

Marginal degenration of the cornea was first described by Triimpy in 1881. Since then other investigators have reported many marginal degenerations of the cornea in various different clinical nomenclatures but it has never been described in Korea. Marginal or peripheral degeneratoin of the cornea was also reported by Terrien in 1900. The condition is uncommon and usually bilateral although one side may be more advanced than the other. It occurs most often (about 75%) in male in the age brancket of 10 to 70 but majority of cases were noted before the age of 40. Clinically the disease starts with peripheral opacity in punctate pattern simulating an arcus seniHs and vascularized. As the problem advances, furrow gradually develops and spreads all around the periphery of the cornea in circumferential fashion. The cornea becomes extremely thin in this area but epithelium is intact. At the central margin of the furrow, one may see an advancing edge of lipid. The two cases reported in the following are a 20 year old Korean lady with unilateral marginal corneal degeneration in the inferior part of the cornea, and a 68 year old man with typical bilateral marginal corneal degeneration which has developed since his age of 27.

Refraction in School Children

518 children (282 boys and 236 girs) of a primary school were determined under mydrin-p instillation. (1) Among 518 children, Ammetropia was 43.6% emmetropia 56.4%. (2) As to the distribution of refractive error 38.2% were hyperopia and 4.1% myopic. (3) There was an anuual decrease in the incidence of hyperopia both in the country and city. In contrast, the incidence of myopia showed an annual increase in city only. (4) The majority of refractive error were less than 3 diopter. (5) "With the rule" astigmatism was more commonly found than "against the rule". (6) The incidence of myopia among primary school children in the country had dropped to 4.1 % as compared with 13.7% in city.

The Congenital Coloboma of the Choroid

We report of 3 cases of atypical coloboma of choroid. The two of these were one male and one female. A man aged 40 discovered atypical coloboma of choroid bilaterally with red-green color blindness. One of his son aged 6 discovered atypical coloboma of choroid bilaterally with nystagmus. One of his daughter aged 11 discovered of atypical coloboma of choroid bllaterally with alternating exotropia.