a.[Z][B]

1. 眼的；视力的，视觉的
   the optic nerves

   视觉神经

2. 光学的

n.

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

   光学是有关视觉、视力和光的一门学科。

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.