Glaucoma is not a single disease but a group of diseases that damages the optic nerves. The function of the optic nerves is to carry information from the eye to the brain. You may lose your vision when this nerve gets damaged. One of the most common causes for legal blindness in the world is glaucoma. People with this condition lose side vision at first. Loss of vision may get worse if the condition isn’t treated. Over time, this can lead to complete blindness.
Types of Glaucoma
There are three main types which are as follows:
This condition is rare which some infants get at birth. This disease may also appear in some children and young adults.
Open Angle Glaucoma (OAG)
This is the most common form in Canada and US and less common in other parts of the world. It affects both the eyes at the same time. Gradually, your vision will become worse. Unfortunately, the vision gets worse so slowly that you may not even notice it.
Closed Angle Glaucoma (CAG)
Usually it affects only one eye at a time. This type can happen suddenly and will be a medical emergency.
The cause of the disease is still a mystery. According to the experts, an increased pressure in the eye may be the cause for damage of the nerve in most cases. But in some people who have this disease show normal eye pressure. Some people may get this disease after eye surgery or an eye injury. The medicines which you use to treat other health conditions may also cause glaucoma like corticosteroids.
In case of OAG, you are more the likely to notice only one symptom i.e. vision loss. It may not come to your notice until it is very serious. The reason is the eye that is least affected makes up for the loss. Moreover you lose your side vision before the central vision.
CAG symptoms may be mild with symptoms such as blurred vision that lasts for a short time only. But severe signs of CAG may include blurred vision that lasts for longer periods or pain in or around the eye. There are chances that you may see colored halos around the lights, feel sick in your stomach and vomit or have red eyes.
In case of congenital condition, glaucoma signs may include sensitivity to light and watery eyes. Your baby may keep the eyes closed most of the time, squint or may rub the eyes.