Temporal optic disc pallor Optic nerve gray crescent 2018-03-20T19:55:34Z Temporal grey pigmentary crescent Optic nerve grey crescent Having a characteristic appearance of a slate gray area of pigmentation within the disk margins that commonly appears along the inferotemporal or temporal neuroretinal rim areas. This type of disk rim pigmentation can create the impression of neuroretinal rim thinning, and thus lead to the misdiagnosis of glaucoma or "glaucoma suspect" with attendant implications for overtreatment or unnecessary close monitoring of such patients. Temporal gray pigmentary crescent