晩発性後発白内障について

On cataracta secundaria tardiva

　晩発性後発白内障とは，白内障嚢外摘出を行い，更に後発白内障を切開して，少なくとも瞳孔領の中央部には白内障の残物を全く認めなくなつたものが，後日この透明部に混濁を再発した場合をいうのであります。

　西洋では旧い眼科教科書〔例えばAxenfeld （1922），Hertel （1935）〕にもその記載がありますが，日本では演者が昭和15年に報告したのが初めてのようであります。最近庄司氏（日眼全書昭35年）藤野氏〔須田経宇編集新眼科学昭和37）がこの事に蝕れております。

Secondary cataract of tardive onset is defined as a state of opacity of the pupillary area with resultant visual failure in eyes in which previous extracapsular extraction and successful discision of secondary cataract had been performed. Two types are described :

Type I consists of cases in which numerous vacuoles accumulate over the pupillary area which has once become transparent. The condition may resemble the spawns of frog and represent the more usual type observed clinically. Proliferation of epithelial cells ar-ound degenerated fiber of the crystalline lens is the basic pathological process.