Electrophysiological and microperimetry changes in vitamin A deficiency retinopathy.

Purpose: To describe a follow-up case of vitamin A deficiency (VAD)-related retinopathy with macular involvement monitored with electroretinography and microperimetry.

Methods: Flash (ERG), pattern (PERG), and multifocal (mfERG) electroretinography were recorded in parallel with microperimetry before and during 7-month follow-up of vitamin A treatment on a 65-year-old man presented with a 1-year history of night blindness. The patient had undergone ileostomy procedure for Crohn's disease 14 years ago.