The eye's natural crystalline lens helps us focus on people and things at varying distances. Unfortunately, as we grow older this lens often stiffens and hardens, and without its youthful suppleness, it loses its ability to focus, creating vision problems. This condition — for most, a natural consequence of aging — is called presbyopia.

As we age, these changes occurring to the natural crystalline lens can lead to the development of cataracts, or a loss in clarity of the lens.

Since the lens is no longer as flexible or as clear as it used to be, the eye can't focus light properly, causing the following symptoms:

• Cloudy or blurred vision

• Sensitivity to light and glare

• Poor night vision

• Fading color

• Frequent changes in glasses prescription