Dr. Merrill M Knopf M.D.

Color blindness is not a real blindness but a deficiency in seeing colors. People having color blindness can’t distinguish between certain colors, like red and green, or blue and yellow. The red and green color deficiency is the most common type of this condition.What causes color blindness?It is...

The normal process of aging is the leading cause of cataracts. The eye’s lens slowly loses its clarity and gets cloudy as we age. As a result, the quality of vision decreases. Cataract surgery is recommended when your life’s quality starts to suffer.It is important to know how to prepare...

Your eyelid’s skin is stretchy and loose with a thickness of less than 1 mm. Your eyelids can swell if there is a buildup of fluid in the tissues that surround your eyes.In most cases, swollen eyelids are not a cause for concern and can return back to its normal shape and size after a few days....

LASIK eye surgery is a corrective procedure that aims to rectify vision distortions that are caused by the changing curvature of the cornea and shifting length of the eyeball. The cornea is a transparent coating that bulges on the outside of the eyeball, and allows light to penetrate its surface at...

A child’s eyesight develops over time, starting with the ability to see objects 8 to 10 inches from their face. The child's eyesight improves gradually between the ages of 12-weeks-old to 16-weeks-old, to which they are able to see objects from farther away. Vision problems in children arise...

What is a stye?A stye occurs when a particular strain of bacteria affects the oil gland of the eyelid. It becomes infected and causes inflammation, redness, as well as pain on the eyelid and its surrounding tissues. A stye is an inflamed swelling or circumscribed abscess. It can be treated with...