青色光による白内障の観察

Fluoroscopic examination of cataract

I．緒言

　紫外線の照射によつて，水晶体が螢光を発することは，よく知られているが，短波長可視光の照射によつても，水晶体核が螢光類似の黄色発光を生ずること，これが年令や白内障によつて影響されることは，未だ知られていないので報告する。

The crystallin lens was examined with Go-ldmann slit lamp 900 a blue filter being inse-rted for fluoroscopy.

The nucleus of the lens showed at the inc-idence of blue light a yellow luminescence, the intensity and distribution of which were graded in five degrees from 0 to 4.

The yellow luminescence caused by blue light generally appears at the age of 25, rea-ches it's maxial intensity at the age of 40 and then decreases gradually to disappear completly at the age of 80.

It increases in earlier stages and decreases in later stages of cataract. The process is more rapid in nuclear type than in cortical type of senile cataract.