水晶体後嚢損傷による外傷性白内障

Two cases of traumatic rupture of the posterior lens capsule and cataract

緒　言

　眼球に鈍的な外傷を受けて，その外傷のために水晶体後嚢が損傷され，白内障をおこした症例を2例経験した。

　症例1は，水晶体の後嚢と前硝子体膜が破れて，水晶体の核が後方の硝子体中に飛び出した症例である。症例2は，後嚢は破裂していたが，前硝子体膜は破れずに水晶体後皮質が後方へ膨隆した状態となつていた。

Rupture of the posterior lens capsule due to blunt ocular trauma is a rare event. Recently we observed two instances of this condition. The first case, a 10-year-old boy, had been hit on the left eye by a lump of cray thrown by his schoolmate. Through the cloudy lens material, we observed the posterior lens capsule to be ruptured and the lens nucleus delivered into the vitreous through the capsular wound. The second case, a 12-year-old boy, had been pushed forcibly on the right eye by the knee of his friend when engaged in wrestling.