What is glaucoma?
Glaucoma is when normal fluid pressure inside the eyes slowly builds up and doesn’t drain properly. Instead, the fluid collects and causes damage to the optic nerve. The optic nerve is a bundle of nerve fibers that connects the retina with the brain. This damage leads to loss of eyesight.
There are many different types of glaucoma:
- Open-angle glaucoma
- Low-tension or normal-tension glaucoma
- Angle-closure glaucoma
- Childhood glaucoma
- Congenital glaucoma
- Primary glaucoma
- Secondary glaucoma
What causes glaucoma?
We do not know what causes glaucoma. Even people with normal fluid pressure inside the eyes can lose their eyesight from glaucoma.
Who is at risk for glaucoma?
Anyone can develop glaucoma. However, some people are at higher risk than others.
The risk factors for glaucoma are:
- Race – Glaucoma is the leading cause of blindness for African-Americans.
- Age – People ages 60 and older are more at risk for developing glaucoma.
- Family history – People with a family history of glaucoma are more likely to develop the disease.
- High fluid pressure inside the eyes – People with a high fluid pressure inside the eyes are at an increased risk.
Anyone in these risk groups should get an eye exam with dilated pupils every two years.
What are the symptoms of glaucoma?
Most people who have glaucoma do not notice any symptoms until they start to lose some of their eyesight. As optic nerve fibers are damaged by glaucoma, small blind spots may begin to develop. They usually happen on the side or in their peripheral vision. Many people do not notice the blind spots until significant optic nerve damage has already happened. If the entire nerve is destroyed, the person becomes blind.
One type of glaucoma, called acute angle-closure glaucoma, does produce noticeable symptoms. This is because there is a quick buildup of pressure in the eye. These are the most common symptoms of this type of glaucoma. However, each person may experience symptoms differently.
Symptoms may include:
- Blurred or narrowed field of vision
- Severe pain in the eyes
- Haloes or “rainbows” around lights
- Nausea
- Vomiting
- Headache
The symptoms of acute angle-closure glaucoma may look like other eye problems. Get medical attention right away if you notice symptoms in order to prevent blindness.
How is glaucoma diagnosed?
Your eye medical doctor (MD) may do the following tests to diagnose glaucoma. He or she will take your complete medical history and examine your eyes.
You may also have the following tests:
- Visual acuity test – This is the common eye chart test that measures how well you can see at various distances.
- Pupil dilation – This is when the pupil is widened with eye drops so your physician can get a close-up exam of the eye’s retina.
- Visual field – This test measures a person’s side or peripheral vision. Lost peripheral vision may mean a person has glaucoma.
- Tonometry – This standard test determines the fluid pressure inside the eye.
How is glaucoma treated?
Your healthcare provider will figure out the best treatment for you based on:
- Your age
- Your overall health and medical history
- How sick you are
- How well you can handle specific medicines, procedures, or therapies
- How long the condition is expected to last
- Your opinion or preference
The symptoms of glaucoma sometimes look like other conditions or medical problems. Always see your eye medical doctor (MD) for a diagnosis. While glaucoma can’t be cured, early treatment can often control it.
Treatment may include:
- Medicines – Some medicines cause the eye to make less fluid while others lower pressure by helping fluid drain from the eye.
- Surgery – The purpose of surgery is to create a new opening for fluid to leave the eye.
- Laser surgery – There are several types of surgeries using a laser that is used to treat glaucoma.
- Tube shunt – A surgical procedure in which a flexible plastic tube is placed in the eye to help drain fluid.
In some cases, a single surgery isn’t enough to slow down the progress of glaucoma. In those cases, repeat surgery and/or continued treatment with medicines may be necessary.
What are the complications of glaucoma?
Without treatment, glaucoma can cause permanent blindness.
Living with glaucoma
To help prevent your glaucoma from getting worse, it’s important to follow your eye medical doctor’s (MD) advice. If you have already lost some of your eyesight, ask for information on services for people with low vision. There are devices that may help you with your everyday tasks.
When should I call my eye medical doctor (MD)?
If your symptoms get worse or you have new symptoms, call us at (860) 644-5011.
Key points about glaucoma
- Glaucoma is a health problem where the normal fluid pressure inside the eyes slowly builds up and doesn’t drain properly
- Even people with normal fluid pressure inside the eyes can lose their eyesight from glaucoma
- Most people who have glaucoma don’t notice any symptoms until they start to lose some of their eyesight
- Acute angle-closure glaucoma can damage your vision, cause severe eye pain, nausea, vomiting, and headache
- While glaucoma can’t be cured, early treatment can often control it
- Treatment may include medicines and/or surgery
- Without treatment, glaucoma can cause permanent loss of eyesight
