Normal vision:

Normal vision occurs when light is focused directly on the retina rather than in front or behind it.
- Reviewed last on: 1/21/2009
- Paul B. Griggs, MD, Department of Ophthalmology, Virginia Mason Medical Center, Seattle, WA . Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.