1. Carr RE, Siegel IM. Electrodiagnostic testing of the visual system: A clinical guide. Philadelphia: FA Davis Company, 1990.
2. Galloway NR. Ophthalmic electrodiagnosis, 2nd ed. London: Lloyd-Luke, 1981.
3. Heckenlively JR, Arden GB, eds. Principles and practice of clinical electrophysiology of vision. St Louis, MO: Mosby Year Book, 1991.
4. Spehlmann R. Evoked potential primer: Visual, auditory and somatosensory evoked potentials in clinical diagnosis. Boston, MA: Butterworth, 1985.
5. Barber C, Galloway NR. A pattern stimulus for optimal response from the retina. Doc Ophthalmol 1976; 10: 77?86.