Cataracts

• Cataract - is an opacity (something that restricts the passage of light) in the lens that causes blurry vision and is caused by an improperly acting gland (parathyroid gland).
• The primary symptoms of cataracts are problems with distance vision, bad night vision, or a glare or halo around lights.
• All people over the age of 65 have some degree of cataracts.
• There are three main types of cataracts, a nuclear cataract, (which affects center vision) a cortical cataract, (which affects the peripheral vision) and a posterior subcapsular cataract (which affects the upper vision).
• With surgery, it is possible to see perfectly even in the most severe cases. In cataracts surgery the entire lens is removed and an artificial one is put in its place.
• The following is an image of a simulated cataracts procedure. First the cornea is cut back and the entire lens is removed.  Then an artificial lens is put in place, and finally, the cornea is put back on.