Ausayakhun S, Limsopatham K, Sanit S, Sukontason K, Sukontason K L
Department of Ophthalmology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
Trop Biomed. 2018 Mar 1;35(1):288-292.
Orbital ophthalmomyiasis occurs infrequently in Thailand. Herein, we report a case in Chiang Mai, Thailand, of orbital ophthalmomyiasis due to larvae of the blow fly Chrysomya bezziana (Diptera: Calliphoridae). A 94-year-old woman was admitted to Maharaj Nakorn Chiang Mai Hospital, Chiang Mai, Thailand, with a swollen and ulcerated right upper eyelid. The lesion in the eyelid had multiple holes around the ulcer site; bleeding was accompanied by pus and necrotic tissue - the site was filled with dipteran larvae. Eleven larvae were removed from the patient, of which five were killed for microscopic examination and six were reared in the laboratory under ambient temperature and natural relative humidity until they metamorphose into adult. Five third instars and one adult were morphologically identified as C. bezziana. The predisposing factors were probably chronic immobility, inability of the patient to perform daily activities, and presumably neglected and/or poor personal hygiene. To our knowledge, this case represents the first reported case of orbital ophthalmomyiasis caused by C. bezziana in Thailand.
眼眶蝇蛆病在泰国并不常见。在此，我们报告泰国清迈一例由丽蝇科昆虫贝氏金蝇（双翅目：丽蝇科）幼虫引起的眼眶蝇蛆病病例。一名94岁女性因右上眼睑肿胀溃疡入住泰国清迈玛哈叻那空清迈医院。眼睑病变在溃疡部位周围有多个孔洞；出血伴有脓液和坏死组织，该部位布满双翅目幼虫。从患者身上取出11条幼虫，其中5条杀死用于显微镜检查，6条在实验室环境温度和自然相对湿度下饲养直至变态为成虫。5条三龄幼虫和1只成虫经形态学鉴定为贝氏金蝇。诱发因素可能是长期行动不便、患者无法进行日常活动，以及可能存在的忽视和/或个人卫生状况差。据我们所知，该病例是泰国首例由贝氏金蝇引起的眼眶蝇蛆病报告病例。
