VERZELLA, M A new therapy of retinitis pigmentosa; iuxtabulbar and iuxta foramen opticum injections of nicotinic acid. [electronic resource] - Giornale italiano di oftalmologia - 331-58 p. digital Publication Type: Journal Article ISSN: 0367-455X Subjects--Topical Terms: HumansNiacinNicotinic AcidsOphthalmologyRetinitisRetinitis Pigmentosa