色しき覚かく異い常じょう

noun

color vision deficiency; color blindness

Medical term for conditions where color perception is impaired. In everyday conversation, 色盲 (しきもう) is also used, but 色覚異常 is the more precise clinical term.

• 色しき覚かく異い常じょうは遺い伝でんによる場ば合あいが多おおい。

  Color vision deficiency is often hereditary.

• 彼かれは色しき覚かく異い常じょうのため、赤あかと緑みどりの区く別べつが難むずかしい。

  Because of his color vision deficiency, he has difficulty distinguishing red and green.