a.[Z][B]

1. 眼的；視力的，視覺的
   the optic nerves

   視覺神經

2. 光學的

n.

1. 【幽】眼睛[P1]
2. 光學儀器[P]
3. 光學[P][J]
   Optics is the branch of science concerned with vision, sight and light.

   光學是有關視覺、視力和光的一門學科。

adj.

n.

1. a lens or other optical component in an optical instrument.
2. archaic or humorous the eye.
3. Brit. trademark a device fastened to the neck of an inverted bottle for measuring out spirits.