Retinal Vessels in Patients with Multiple Sclerosis: Baseline Diameter and Response to Flicker Light Stimulation - Gugleta, K; Kochkorov, A; Kavroulaki, D; Katamay, R; Weier, K; Mehling, M; Kappos, L; Flammer, J; Orgül, S (Klinische Monatsblätter für Augenheilkunde, 2009)