色しき弱じゃく

noun

slight color-blindness; mild color vision deficiency

Medical term for a mild form of color vision deficiency, less severe than 色盲 (color blindness). Often used in clinical or educational contexts.

• 彼かれは色しき弱じゃくのため、特とく定ていの色いろの区く別べつが難むずかしい。

  Because of his mild color vision deficiency, he has difficulty distinguishing certain colors.

• 色しき弱じゃくの人ひとは、赤あかと緑みどりの見み分わけがつきにくいことがある。

  People with mild color-blindness sometimes have trouble telling red and green apart.