Dr. Steven Yeh MD

What is Chalazion?A chalazion is a benign and painless nodule which can occur in the upper or lower eyelid. It is common and is sometimes called a meibomian cyst or a tarsal cyst. The term chalazion (pronounced kah-la'-ze-on) originates from the Greek word which means a small lump. These nodules...

Eye floaters are small, moving specks on the eyeball that often occur in one's field of vision. These grey or black dots, become more prominent while looking at a bright object. If the floaters are large they may shadow vision, but in most cases, eye floaters are harmless. People often neglect or...

Cataract is a disease which makes an eye lens to appear cloudy, thus reducing the eyesight. A normal eye lens assists in focusing light onto the retina for clear and undistorted image appearance. When a cataract forms in the eye, it makes images appear blurred and distorted. Although cataracts can...

Fast on the heels of FDA approval, the passage of nearly two decades has seen Lasik eye surgery (laser in situ keratomileusis), assuming the number one spot in elective surgical procedures opted by the American public. Lasik has redefined eye care by surgically reshaping the cornea of the eye in...

The exact cause of cataracts is not known. Nevertheless, it seems that most cataracts are caused by long-term variations in the eye lens protein components which in turn causes cloudiness in the lens. Though not common, cataracts can affect infants and young children due to genetic enzyme...

Conjunctivitis is a condition that most commonly appears in the human eyeball, specifically in the front of the eye. Conjunctivitis can be seen when the white part of the eye turns red or pink.  Most people think that red eye can appear if they don’t sleep enough, but they might not actually be...