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Macular Degeneration

What is Macular Degeneration?

Macular Degeneration Jefferson CityMacular degeneration, also known as AMD and ARMD (for Age Related Macular Degeneration), is an eye disease that is a leading cause of visual loss in older adults. Macular degeneration is likely related to a variety of factors including genetic predisposition and inflammation, but the exact cause of this disease is unknown. AMD is the deterioration of the central retina, the macula. The macula is a small, specialized region of retina, and is responsible for central vision. Intact central vision is vital for reading, driving, and recognizing faces.

Many older people develop mild forms of macular degeneration as part of the natural aging process. There are different kinds of macular problems, but macular degeneration is the most common macular disorder. Macular degeneration usually does not affect one’s peripheral vision like with glaucoma. For example, with advanced macular degeneration, people can generally see the outline of a television, yet may not be able to see the text of the TV screen.


Symptoms of Macular Degeneration

Symptoms of AMD include:

  • Distorted vision,
  • A dark spot seen centrally, and
  • Blurred vision.
  • Loss of central vision

Types of Macular Degeneration

Macular degeneration is often grouped into two categories and these are the "dry" and "wet" types of macular degeneration. The "dry" form is more common and can include loss of retinal pigment and deposit of material in the tissues underlying the macula. These changes can lead to distorted or decreased vision. As the disease progresses, changes in the blood vessels underlying the retina can cause bleeding or leaking, which is the “wet” component of wet macular degeneration. Wet macular degeneration is less common in patients but can have serious affects on the eyes such as central vision loss.

How is Macular Degeneration diagnosed?

Your Capitol Eye Care ophthalmologist will use an ophthalmoscope to view the retina. Disorders in this region of the eye can be further evaluated with additional testing. An OCT (Ocular Coherence Tomography) is a non-contact test that evaluates different cell layers comprising the retina. Fluorescein angiogram is a test that utilizes a fluorescent dye to assess for leaking blood vessels. These tests allow the ophthalmologist to identify the abnormal tissue at the root of wet AMD.

How is Macular Degeneration Treated?

There is no known treatment for the “dry” form of AMD, although multivitamins and certain dietary elements (A.R.E.D.S. 1 and 2) may help reduce the risk of progression. Low-vision tools such as magnifying lenses, specialized lights, telescopic or prism glasses, and closed-circuit TV may be helpful for patients with this form of macular degeneration.

The wet type of AMD has enjoyed several treatment breakthroughs in the last few years. Anti-VEGF (vascular endothelial growth factors) compounds are used to stop the growth of abnormal blood vessels. These medicines are administered on a regular basis and have provided hope for a previously hopeless disease. 

Once a patient has received treatment for AMD, he or she must continue to have regular examinations of the retina so that any additional growth of new vessels can be detected and treated. If the patient notices any new symptoms, he should be examined promptly.

The Prevention of Macular Degeneration:

If you have a family history of macular degeneration or are a cigarette smoker, you may choose to make some lifestyle changes that could help lower your risk for macular degeneration.

Listed below are a few tips for macular degeneration prevention:

  • Exercise regularly
  • Maintain a healthy well balanced diet rich in fruits and vegetables, particularly greens and brightly colored vegetables
  • Obtain regular eye exams after the age of 60
  • Do not smoke
  • Follow AREDS / A.R.E.D.S. 1 and 2 nutrition guidelines