光こう覚かく

noun

light sense; light perception

Medical/physiological term for the ability to perceive light, often used in ophthalmology or sensory physiology.

• 光こう覚かくが失うしなわれると、完かん全ぜんな暗くら闇やみしか感かんじられなくなる。

  When light perception is lost, one can only sense complete darkness.