A fluorescein dye disappearance test is used in children and adults to find out whether tears are draining normally from the eyes into the nose.
One drop of a special dye (fluorescein) or a paper strip containing the dye is placed between the eyelid and the eye.
After 10 to 15 minutes, the doctor looks in your eye using a blue light. The light can detect very small amounts of fluorescent dye. The doctor may also use the light to look in your throat and inside your nose.
Normally, tears sweep the dye out of the eye and into the tear ducts. If dye stays in the eye, the tear duct may be blocked.
Primary congenital glaucoma (PCG) is an eye disease that affects children between the ages of birth and 3 years. It is one type of glaucoma. Glaucoma refers to a group of diseases in which there is permanent and characteristic damage to the optic nerve which is usually associated with abnormally high intraocular pressure.
Primary congenital glaucoma is rare. It affects about one in every 10,000 infants. But it is serious and needs attention. Untreated primary congenital glaucoma is a major cause...