Objects do not possess color of their own. Our eyes perceive color as different wavelengths of light that bounce off things, and our brains process that information to help us interpret the world we see in vibrant color. 

The visible spectrum lands between ultraviolet light and red light for humans, but scientists believe that humans can recognize up to 10 million colors. 

Vision loss or impairment can be caused by a number of injuries, illnesses, and more. Some cases happen gradually while others occur suddenly. In some situations, vision loss can be easily corrected with eyeglasses, contact lenses, or surgery. But for most, vision loss is a frustrating experience for many as it dramatically changes their way of life.

Age may also play a part in vision loss, usually changes become apparent after 40 years of age.

Here are some common causes of vision loss.