名词
中文翻译：角膜瘤
同义词：
['corneal tumor', 'corneal aneurysm', 'corneal opacity']
例句：
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1. The patient's coloboma of lens was causing significant vision impairment.
患者的角膜瘤导致了严重的视力障碍。
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2. The doctor performed an examination to determine the cause of the coloboma of lens.
医生进行了检查以确定角膜瘤的原因。
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3. The coloboma of lens had been present since birth and required surgery to correct it.
这个角膜瘤自出生以来就一直存在，需要进行手术来纠正。