It is the indispensable tool for diagnosing diseases of the eye, including glaucoma, and is used to screen for diabetic retinopathy, a condition in diabetics that can result in blindness.

它是诊断包括青光眼在内的眼部疾病的不可或缺的工具。除此之外，它还可以被用来拍摄到可以导致糖尿病人使失明的糖尿病视网膜病变情况。

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Diabetic Retinopathy is the most disease that causes patients blind at present becomes one of four eye diseases that make the patients blind.

糖尿病性视网膜病变是目前导致糖尿病患者致盲的主要疾病，已经成为病人致盲的四大眼病之一。

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Diabetes, characterized with hyperglycemia, may lead to many complications, such as ketoacidosis, hypertension, atherosclerosis, eye diseases, diabetic nephropathy.

糖尿病以高血糖为特征，可引起酮症酸中毒、高血压、动脉粥样硬化、眼病、糖尿病肾病等并发症。

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That number is expected to double by 2030 as the aging population brings rising rates of macular degeneration, glaucoma, diabetic retinopathy and other eye diseases.

WSJ: High Tech for Low Vision