a clear disk that focuses light, as in a camera or microscope. in the eye, the lens is a clear, curved structure at the front of the eye behind the pupil. it focuses light rays that enter the eye through the pupil, making an image on the retina (light-sensitive layers of nerve tissue at the back of the eye).
(眼球内の)水晶体
the crystalline lens
目の水晶体.
the lens of the eye
the tissue that surrounds the lens nucleus
of or relating to or afflicted with aphakia