因戴用隱形眼鏡而引起角膜潰瘍之病例於近年來有越來越多的趨勢。尤其在長戴型隱形眼鏡問世後,這類的病例更是急速增加,但是兩眼同時受到染的病例仍相當少見。本文報告一例因用長戴型軟式隱形眼鏡而、同時感染角膜潰瘍之病例,並探討戴用穩形眼鏡引發角膜潰瘍的高危險因子。 病人為23歲女性,因眼部劇痛、紅腫、流淚及視力驟降而來院就診,病人戴用長戴型軟式隱形眼鏡已有四年半,目前的鏡片也已使用了二年半。病人為一舞女,經常整夜工作於煙霧瀰漫的場所,每日約抽一包煙,並染上安非他命藥癮。她經常持續戴用隱形眼鏡超過一週,鏡片均未用酵素片做去蛋白處理。因兩眼鏡片規相同,常兩眼交換戴用。病人於發病前日下午五點戴上隱形眼鏡後工作至翌日凌晨七點,於服下安眠藥和酒精後戴著隱形眼鏡睡覺。八個鐘頭後因兩眼劇痛醒來而來求診,理學檢查發形兩眼視力於眼前30公分僅見手動,兩眼瞼紅腫。細隙燈檢查發現兩眼結膜充血,輪部血管浸潤,兩眼角膜於接近視軸處有基質膿腫和表皮缺損,前房有細胞反應。微生物培養結果為Pseudomonas aeruginosa 和Acinetobacter calcoaceticus, 經1% Amikin和10%Piperacillin藥水點眼治療4天後,膿腫漸消,浸潤減輕,於兩週後治癒僅留下輕微角膜白斑,兩眼視力經透氣硬式隱形眼鏡矯正後均可達到1.0。 隱形眼鏡引發之角膜潰瘍通常和下列之高危險因子有關:過夜配戴,鏡片清潔不良,吸煙及糖尿病。本病人除糖尿病外其餘之高危險因子皆具備,而病人有安非他命藥癮,安非他命會升高血中之腎上腺類固醇並壓抑免疫反應,可能在導致角膜潰瘍的過程中也是一個值得注意的相關因子。
A case study was made of a 23-year-old femal with simultaneous bilateral infectious corneal ulcers related to extended-wear soft contact lenses. Cultures revealed Pseudomonas aeruginosa and Acinetobacter calcoaceticus. Multiple high risk factors were combined, includeing extended-wear, poor lens care, bilateral alternate wearing, and smoking. Amphetamine addiction may also have played a role. After treatment, a visual acuity of 20/20 was achieved in both eyes by the use of rigid gas-permeable contact lenses.