眼的、视力的、光学的 optical
我们就把该愿望付诸于矫正我们的视力：近视眼给依靠在远处发现晚宴的能力而生存的人来说是致命的。
We do this with eye sight: Nearsightedness could have been fatal for people whose ability to survive depended on spotting dinner off in the distance.
如果你一只眼失明，你只会失去约五分之一的视力(但会失去全部的深度知觉)。
If you go blind in one eye, you'll only lose about one-fifth of your vision (but all your depth perception).
青光眼，一种主要的导致视力丧失和失明的疾病，其主要治疗方法是滴眼药水。
Glaucoma - one of the leading causes of vision loss and blindness - is usually treated with eye drops.
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