<unk> 's<unk>  (also called<unk> 's scotoma) is a sickle-shaped scotoma that is a superior or inferior extension of the blind spot. It occurs in some patients with glaucoma.
Seidel sign
Schwartz sign
Crescent sign
Air crescent sign
Müller's sign
Amsler sign
Froment's sign
Larrey's sign