noun, noun which may take the genitive case particle 'no'
night blindness; nyctalopia
Medical and folk term for difficulty seeing in low light. Often used in the phrase 鳥目になる.
彼は鳥目で、暗くなるとほとんど見えなくなる。
He has night blindness and can barely see once it gets dark.
鳥目になると、夜の運転が危険だ。
If you develop night blindness, driving at night is dangerous.