Phosphene thresholds elicited by transcorneal electrical stimulation in healthy subjects and patients with retinal diseases - Naycheva, Lubka; Schatz, Andreas; Röck, Tobias; Willmann, Gabriel; Messias, André Márcio Vieira; Bartz-Schmidt, Karl Ulrich; Zrenner, Eberhart; Gekeler, Florian (Investigative Ophthalmology and Visual Science, 2012)