Glaucoma is a condition in which the normal fluid pressure inside the eyes (intraocular pressure, or IOP) slowly rises as a result of the fluid aqueous humor - which normally flows in and out of the eye - not being able to drain properly. Instead, the fluid collects and causes pressure damage to the optic nerve (a bundle of more than 1 million nerve fibers that connects the retina with the brain) and loss of vision. Glaucoma is classified according to the age of onset. Glaucoma that begins before the child is 3 years old is called infantile or congenital (present at birth) glaucoma. Glaucoma that occurs in a child is called childhood glaucoma.
Glaucoma occurs when the fluid drainage from the eye is blocked by abnormal development or injury to the drainage tissues, thus, resulting in an increase in the intraocular pressure, damage to the optic nerve, and loss of vision.
There are many causes of childhood glaucoma. It can be hereditary or it can be associated with other eye disorders. If glaucoma cannot be attributed to any other cause, it is classified as primary. If glaucoma is a result of another eye disorder, eye injury, or other disease, it is classified as secondary.
In addition to a complete medical history and eye examination of your child, diagnostic procedures for childhood glaucoma may include:
Younger children may be examined with hand-held instruments, whereas older children are often examined with standard equipment that is used with adults. An eye examination can be difficult for a child. It is important that parents encourage cooperation. At times, the child may have to be examined under anesthesia, especially young children, in order to examine the eye and the fluid drainage system, and to determine the appropriate treatment.
Glaucoma is rare in children, as compared to the adult. However, when it does occur, the symptoms may not be as obvious in children. Many children are diagnosed before they are 6 months old. Glaucoma can affect one eye or both.
The following are the most common symptoms of childhood glaucoma. However, each child may experience symptoms differently. Symptoms may include:
If the eye pressure increases rapidly, there may be pain and discomfort. Parents may notice that the child becomes irritable, fussy, and develops a poor appetite. Early detection and diagnosis is very important to prevent loss of vision. The symptoms of glaucoma may resemble other eye problems or medical conditions. Always consult your child's physician for a diagnosis.
Specific treatment for glaucoma will be determined by your child's physician based on:
It is important for treatment of childhood glaucoma to start as early as possible. Treatment may include:
Both medications and surgery have been successfully used to treat childhood glaucoma.