1·Glaucoma: This is caused by an abnormal rise in pressure in the eyes that damages the optic nerve and results in defective vision and narrowed visual field.
青光眼：眼球压力过高导致视觉神经受破坏，患者的视力下降及视野缩窄。
2·This is something like a person who has defective eyesight and is seeing spots and all sorts of illusions, and goes to an ophthalmologist to correct his vision.
这有点像一个视力有缺陷的人，他看到黑点和各种乱像就去找眼科医生，希望纠正他的视觉。佛教实际上是矫正人的心理精神的视觉。
3·Her vision is seriously defective.
她的视力有严重缺陷。
4·About 500 of the drivers suffered from either defective near vision or distant vision, Parimoo added. Another 25 suffered from color blindness, while five had irreparable vision damage.
这位所长还说，大约有500名司机患有近视和远视，25人有色盲，5人的视力曾经遭受不可修复的损害。