***** Complete Eye conditions guide *****
The human eye is an organ, which reacts to light for several purposes. As a conscious sense organ, the eye allows vision. Rod and cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth.
The human eye can distinguish about 10 million colors. Eyes are considered as a most important organ of human body. Hence, we need to take special precautions in understanding the conditions and causes for eye disease.