VISION > EVALUATE WINE APPEARANCE
HOW VISION WORKS
A little physiology will help you understand some of the hows and whys related to evaluating wine appearance.
The retina, located at the back of your eye on the inside surface, contains nerve cells called photoreceptors. There are two types of photoreceptors: cones and rods.
Cones are used in bright light conditions. They perceive color.Bright light is important for evaluating appearance; it helps you see the colors better. In dim light, colors appear gray.
Rods are used in dim light. They do not perceive color.
But why do we see different colors? The human eye perceives light, which comes in...