The process by which the world outside is seen is termed as visual process or physiology of vision. There are three phases in this visual process: phase of refraction of light. phase of conversion of light energy into electrical impulse and finally peripheral and central neurophysiology. With the advent of modern instruments step by step biochemical changes occurring at each level of ... https://www.ngetikin.com/hot-mega-Ventilationstejp-50-mm-Fresh-flash-find/