retinal

名词 retinal:

1. either of two yellow to red retinal pigments formed from rhodopsin by the action of light
   同义词：retinene

形容词 retinal:

1. in or relating to the retina of the eye

1. A unit of retinal illumination, equal to the amount of light that reaches the retina through 1 square millimeter of pupil area from a surface having a brightness of 1 candela per square meter.
   光度视网膜亮度单位，相当于每平方米有一烛光亮度的表面，通过一平方毫米的瞳孔区域，到达视网膜的光线数量

ret.i.nal

n.（名词）
See retinene
参见 retinene