详细解释:n. 视网膜
【医】 视网膜
词型变化：
名词复数:retinas形容词:retinal英语解释：
名词 retina:
the light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerve例句：
The condition of the normal eye when parallel rays are focused exactly on the retina and vision is perfect.屈光正常当平行光线恰好聚焦于视网膜并形成清晰视觉时正常眼睛的状态