black cataract

例句：

1. 1. The patient was diagnosed with a black cataract, which required surgery to remove it.
   患者被诊断出患有黑白内障，需要进行手术去除。
2. 2. The black cataract made it difficult for the patient to see clearly.
   黑白内障使患者难以看清。
3. 3. The doctor advised the patient to undergo surgery to treat the black cataract.
   医生建议患者接受手术治疗黑白内障。