1·This and other methanol-based kickers are sometimes fatal: 10ml of methanol can burn the optic nerve; 30ml can kill.
这种酒和其他甲醇勾兑的烈酒有时候是致命的：10ml的甲醇即可烧坏视神经、30ml即可致命。
2·In glaucoma, the optic nerve becomes progressively damaged and, if not treated, leads to loss of vision and even blindness.
在青光眼这种疾病中，视神经遭到逐渐的破坏，如果不加治疗，则会导致视力减退乃至失明。
3·This is a sign that her optic nerve is functioning.
这是她的视神经开始发挥功能的迹象。
4·But it should be a thorough exam in which the doctor dilates the pupils and examines the optic nerve.
但是，那应该是一次彻底的检查，医生应该为孩子扩瞳检查视神经。
5·Glaucoma is a potentially blinding illness that damages the optic nerve.
青光眼是一种破坏视神经的潜在性致盲疾病。