Macular degeneration explained: From diagnosis to treatment

Macular degeneration, also known as age-related macular degeneration (AMD), is an eye disease that affects the macula, a part of the retina responsible for central vision. AMD is a leading cause of vision loss in people over 50, and the risk of developing it increases with age.

There are two types of AMD: dry and wet. Dry AMD is the most common type, accounting for about 85-90% of cases. It is caused by the thinning and deterioration of the macular tissues, resulting in the formation of tiny, round, yellow deposits called drusen. As dry AMD progresses, the macula may become thinner, leading to a gradual loss of central vision.

Wet AMD, on the other hand, is less common but more severe. It occurs when abnormal blood vessels grow under the retina and leak fluid and blood, causing damage to the macula. Wet AMD can cause rapid and severe vision loss and, if left untreated, can lead to legal blindness.

While the exact cause of AMD is not fully understood, it is believed to be a combination of genetic and environmental factors, such as smoking, poor diet, and prolonged exposure to UV light.

Symptoms of AMD can include:

  • Blurred or distorted central vision

  • Difficulty seeing fine details or colors

  • Dark or empty areas in the center of vision

  • Decreased brightness or intensity of colors

  • Difficulty adapting to low light levels

If you are experiencing any of these symptoms, it is important to schedule an eye exam with your optometrist or ophthalmologist. Early detection and treatment are crucial for preventing vision loss and preserving the quality of life.

Currently, there is no cure for AMD. Still, there are treatment options available that can help slow down the progression of the disease and improve vision. These include:

  1. Nutritional supplements: Some studies have shown that certain vitamins and minerals, such as vitamins A, C, E, zinc, copper, lutein, and zeaxanthin, may help slow the progression of AMD in some people.

  2. Anti-VEGF therapy: This is the most common treatment for wet AMD. It involves the injection of medication into the eye to block the growth of abnormal blood vessels and reduce inflammation and leakage.

  3. Photodynamic therapy: This is another treatment option for wet AMD that involves the injection of a light-activated drug into the bloodstream, followed by exposure to a particular type of laser light that activates the drug and damages the abnormal blood vessels.

  4. Laser therapy: This treatment is used to seal leaking blood vessels and destroy abnormal blood vessels that are causing vision loss. It is most effective in the early stages of wet AMD.

  5. Low vision aids: These are devices such as magnifiers, telescopes, and computer software that can help people with AMD make the most of their remaining vision.

In addition to these treatments, lifestyle changes can help reduce the risk of developing AMD and slow its progression. These include:

  • Quitting smoking

  • Eating a healthy diet rich in fruits and vegetables, especially those high in antioxidants and carotenoids

  • Exercising regularly

  • Protecting your eyes from UV light by wearing sunglasses and hats

  • Monitoring your vision regularly and reporting any changes to your eye doctor

In summary, macular degeneration is a common eye disease affecting central vision. It can lead to vision loss if left untreated. Therefore, it is essential to schedule regular eye exams with your eye doctor, especially as you age, to detect and treat AMD early. While there is no cure for AMD, there are treatment options available that can help slow down the progression of the disease and improve vision, as well as lifestyle changes that can reduce the risk of developing AMD.

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