“…Central nervous system (CNS) involvement is a rare complication of chronic lymphocytic leukemia (CLL) with an incidence of 0.8%−2% and includes manifestations such as cognitive impairment, cerebellar dysfunction, and cranial nerve palsies [1] , [2] , [3] . Ophthalmic disease in CLL is uncommon with 15 cases of optic nerve infiltration reported [1] , [2] , [3] , [4] , [5] , [6] , [7] , [8] , [9] , [10] , [11] , [12] , [13] , [14] , [15] . We contribute one additional case of infiltrative optic neuritis in a CLL along with a comprehensive literature review.…”