患者，男，37岁，以“右眼肿块迅速增大，无痛感5mo”就诊于我科。行眼科常规检查，发现一发白带蒂肿块位于右眼睑裂区角膜缘颞侧。遂行肿块切除术，手术成功。对切除肿块进行病理组织学检查，显示为分化良好的鳞状细胞癌。通过对此例居住在热带地区的亚裔患者发生的结膜鳞状细胞癌的诊治，认为长期的阳光照射是导致鳞状细胞癌发生的一个主要危险因素，提示我们对于任何眼表面病变都必须进行仔细的评估，进而正确诊断和治疗。

An otherwise healthy man, 37-year-old, presented to eye clinic with 5 months history of a painless but rapidly enlarging lesion in his right eye. Ocular examination showed a whitish pedunculated mass located at the temporal limbus in the interpalpebral region of his right eye. The mass was excised surgically and the histopathological examination revealed a well-differentiated squamous cell carcinoma. This case showed an unusual occurrence of conjunctival squamous cell carcinoma in a young healthy Asian patient residing in tropical climate. Chronic sunlight exposure is a major risk factor. Any ocular surface lesion must be carefully evaluated for proper diagnosis and treatment.