Dr. John F. Mccann O.D.

Pink eye, or conjunctivitis, is a contagious eye condition caused by the inflammation and infection of the conjunctiva. The conjunctiva is the transparent membrane covering the white part of the eye and the eyeball. Infection and swelling of the the mucous membrane becomes reddish, and the entire...

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...

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...

Everyone who has had their cataracts removed surgically remembers how happy they felt when they finally regained their ability to see. The world all of a sudden became more lively and full of color. You began doing things you couldn't do when you had the cataracts. But then you began noticing your...

Age-related macular degeneration is a common eye condition that affects macula, a small part at the back of the eye. Macula is the area of eye that helps us to differentiate the finer details. Damage to macula leads to gradual blurring of central vision. Macular degeneration impairs sharp vision and...

What is eyelid twitching?Eyelid twitching or myokymia is an involuntary eyelid spasm. The upper lid is usually affected, but spasms can also occur in the lower lid or both lids. Eyelid twitching is often mild for most people. However, others may experience stronger spasms, which may force their lids...