1. From the Retina and Optic Nerve Research Laboratory, and the2Departments of Ophthalmology,3Physiology and Biophysics, and
2. From the Retina and Optic Nerve Research Laboratory, and the3Physiology and Biophysics, and
3. From the Retina and Optic Nerve Research Laboratory, and the4Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada; the
4. Centre for Ophthalmology and Visual Science, Lions Eye Institute, University of Western Australia, Nedlands, Australia; and the
5. Departments of Physiology and7Clinical Pharmacology, University of Vienna Medical School, Vienna, Austria.
6. From the Retina and Optic Nerve Research Laboratory, and the2Departments of Ophthalmology,4Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada; the