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Eye Conditions

Glaucoma

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What Is Glaucoma?

Loss of vision can be prevented through regular eye examinations. It’s important that you understand what glaucoma is and what you can do to prevent unnecessary vision loss!

Glaucoma is the second leading causes of blindness in adults in the United States. Most people think of glaucoma as one disease. Actually, it is a group of diseases that causes damage to the optic nerve, a bundle of more than a million nerve fibers at the back of your eyes. This nerve is like a “cable” that transmits “pictures” from your eyes to your brain. If you have glaucoma and it is not treated appropriately, the damage to the optic nerve can result in loss of vision and blindness.

Glaucoma is the second leading causes of blindness in adults in the United States.  Most people think of glaucoma as one disease.  Actually, it is a group of diseases that causes damage to the optic nerve, a bundle of more than a million nerve fibers at the back of your eyes.  This nerve is like a “cable” that transmits “pictures” from your eyes to your brain.  If you have glaucoma and it is not treated appropriately, the damage to the optic nerve can result in loss of vision and blindness.
Anatomy of the Eye
According to the Glaucoma Research Foundation, the most common type of glaucoma affects about 3 million Americans – and about half of them don’t know it! These people may be unaware that they have glaucoma, as there may be no obvious symptoms in the early stages, however, damage to the optic nerve may be occurring.

When damage to the optic nerve occurs, blind spots develop. By the time someone is aware of these blind spots, the optic nerve has been significantly damaged.

The good news is that early detection and treatment by your ophthalmologist or eye doctor is the key to preventing nerve damage and blindness. The Glaucoma Research Foundation recommends that everyone should have their eyes tested:
  • From age 35 to 40, every 2-4 years
  • Every 1-3 years from age 40 to 54
  • Every 1-2 years from age 55 to 64
  • Every 6-12 months after age 65

They also recommend that anyone with high risk factors (see below) be tested every year after age 35-40.

Who Is at Risk for Glaucoma?

Everyone is at risk. Anyone, at any age, can have glaucoma. But some people are at greater risk, such as:
  • Anyone over the age of 60
  • African-Americas over the age of 40
  • Anyone with a family history of glaucoma

Glaucoma Risk
Glaucoma Risk
There are several other risk factors including:
  • Elevated eye pressure
  • African American ancestry
  • Hispanics over age 60
  • Farsightedness or nearsightedness
  • Past eye injury (Blunt trauma or penetrating injury)
  • Steroid use
  • Thinner central corneal thickness
  • Systemic health problems, including diabetes, migraine headaches and poor circulation
  • People of Asian decent appear to be at increased risk for angle-closure glaucoma

The National Eye Institute (NEI) notes that studies show that glaucoma is:
  • Five times more likely to occur in African Americans than in Caucasians
  • About four times more likely to cause blindness in African Americans than in Caucasians
  • Fifteen times more likely to cause blindness in African Americans between the ages of 45-64 than in Caucasians of the same age group

For this reason, the NEI recommends that everyone over the age of 60 and African Americans over the age of 40 have comprehensive eye examinations.

How Is Glaucoma Detected?

Seeing your ophthalmologist and having regular eye exams is the best way to detect glaucoma. It is estimated that 60-70 percent of glaucoma cases are detected during routine screening. Since the risk of glaucoma increases as you grow older, regular eye examinations are an important part of protecting your vision. We recommend annual eye examinations beginning at age 55, or age 40 for patients with a family history of the disease.

Many people think that just checking the eye pressure will determine if you have glaucoma. This isn’t true, although having elevated eye pressure is a risk factor.

To diagnose glaucoma, a complete eye examination is required, which would include:
  • Tonometry: Measuring the intraocular pressure
  • Gonioscopy: Inspecting the drainage angle of the eye
  • Ophthalmoscopy: Evaluating any optic nerve damage
  • Visual field testing / perimetry: Testing peripheral vision
  • Optic Nerve Head (ONH) and Retinal Nerve Fiber Layer (RNFL) Analysis / Nerve Fiber Testing: Assessment of the thickness of and any changes to the ONH and the RNFL

​Depending on the results of these tests, taking photographs of your optic nerve or other computerized imaging such as Optical Coherence Tomography may also take place.

It’s important to remember that testing isn’t just done once; it must be repeated at regular intervals to monitor any changes in your eyes. Since glaucoma damage usually can’t be reversed, it’s important for the health of your eyes to detect the earliest signs of problems, so that treatment can be initiated to minimize potential vision loss.

With our aging population, the number of people with glaucoma is expected to increase significantly over the next decade. Fortunately, early detection and rigorous adherence to treatment will be the keys to preserving vision.

Types of Glaucoma

Learn about the two primary types of glaucoma, as well as two additional types of glaucoma:
  • Open Angle Glaucoma
  • Narrow Angle Glaucoma
  • Neovascular Glaucoma
  • Inflammatory Glaucoma ​

Glaucoma Specialists at Kadrmas Eye Care New England

Meet our ophthalmologist who specializes in the treatment of glaucoma: 
  • Richard W. Strecker, MD

Back to Eye Conditions Page

Kadrmas Eye Care New England

55 Commerce Way, Plymouth, MA 02360
14 Tobey Road, Wareham, MA 02571
133 Falmouth Road (Rt 28), Mashpee, MA 02649
Phone Number:
​1-508-746-8600

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8 AM - 4:30 PM 
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