白内障手術後ソフトコンタクトレンズ連続装用患者に発生した角膜血腫

Intracorneal hematoma developed following extended-wear soft contact lens after cataract surgery

　白内障手術後にソフトコンタクトレンズ連続装用中の2例に角膜血腫が発生した。1例は角膜炎の既往があり，他の1例には特に既往眼疾患はなかったが，血腫は角膜実質深層部の新生血管の破綻から発生した。既往眼疾患のないdaily-wearコンタクトレンズ装用者に，角膜実質深層部の新性血管を認めたという報告がある。コンタクトレンズ装用者の定期的診察では，角膜深層部の新生血管出現に注意し，新生血管を認めた時にはレンズ装用を一時中止する必要があると思われる。

Corneal hematoma developed in two cases, aged 75 and 81 years, after uneventful cataract surgery. They had been wearing extended-wear soft contact lens for 3 months and 2 years respectively after surgery. The former case had a history of keratitis Intracorneal hematoma presumably arose from deep stromal neovascularization.

There have been reports that cosmetic daily-wearsoft or hard contact lenses occasionally induce superficial and even deep stromal corneal vascular-ization in eyes with no previous eye diseases. Our cases suggest that possible corneal neovasculariza-tion should be watched in the follow up of cases using extended-wear contact lenses. Temporary discontinuation of contact lens wear is recommend-ed whenever neovascularization, particularly in the deep stroma, is detected.