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Macular Degeneration

Diabetic retinopathy is the leading cause of blindness among Americans under the age of 65.
 

What Is Age-Related Macular Degeneration?

Age-related macular degeneration (AMD) is a progressive eye condition that affects the macula, the small central portion of the retina responsible for sharp, detailed vision. When the macula deteriorates, central vision may become blurred, distorted, or darkened, while peripheral (side) vision usually remains unaffected. AMD often begins silently. Many people experience no symptoms in the early stages, making regular eye examinations essential for early detection and ongoing monitoring.

How Common Is AMD?

AMD is one of the leading causes of vision loss in older adults. Nearly 20 million Americans over the age of 40 are currently affected. Among adults over 85 years old, prevalence may approach 45%. As the population continues to age, AMD remains a significant public health concern.

Types of Age-Related Macular Degeneration

Dry AMD

Dry AMD is the most common form of the disease. Over time, the macula thins or accumulates deposits called drusen, leading to gradual loss of central vision. Symptoms are often subtle in the early stages, and the condition typically progresses slowly.

Although there is currently no cure that reverses dry AMD, research is advancing rapidly, including new treatments being developed for advanced dry AMD (geographic atrophy). Early diagnosis and consistent monitoring help preserve vision and allow timely intervention if changes occur.

AREDS & AREDS2 Supplements

For patients with intermediate AMD or advanced AMD in one eye, the AREDS and AREDS2 vitamin formulations have been proven to:

  • Reduce the risk of progression to advanced AMD by approximately 25%

  • Lower the risk of severe vision loss by about 50% in certain cases

These supplements do not cure AMD and do not restore lost vision, but they can play an important role in slowing disease progression for appropriate patients. Your doctor will determine which formulation, if any, is right for you.

Wet AMD

A smaller percentage of patients develop wet (neovascular) AMD, a more aggressive form of the disease in which abnormal blood vessels grow beneath the macula and leak fluid or blood. This can lead to rapid and more severe vision loss compared to dry AMD.

Because wet AMD can progress quickly, early detection and prompt treatment are critical.

Treatment for Wet AMD

The standard and most effective treatment for wet AMD is anti-VEGF injections. These medications help stop abnormal blood vessel growth and reduce leakage and swelling. Anti-VEGF therapy has significantly improved outcomes and is routinely used to help protect central vision.

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Early Detection at LaserVue

LaserVue uses state-of-the-art Optical Coherence Tomography (OCT) to detect even the earliest and smallest changes associated with macular degeneration. OCT provides highly detailed, cross-sectional images of the retina, allowing your doctor to:

  • Identify AMD before symptoms are noticeable

  • Monitor subtle changes in retinal structure

  • Respond quickly if dry AMD shows signs of progression

  • Detect early signs of wet AMD when treatment is most effective

This advanced imaging technology helps ensure timely action to protect your vision.

Nutritional Support and Lifestyle Factors

Diet and lifestyle play an important role in macular health. Eating leafy green vegetables, colorful fruits, and foods rich in omega-3 fatty acids may support retinal function. Smoking cessation and maintaining good cardiovascular health are also important, as these factors are associated with AMD progression.

Your doctor will guide you on whether dietary adjustments or AREDS supplements are recommended based on your specific stage of AMD.

Treatments for Macular Degeneration

Macular Degeneration and Nutritional Supplements

The exact causes of Age Related Macular Degeneration are not fully understood, a recent scientific study shows that antioxidant vitamins and zinc may reduce the impact of AMD in some people with the disease. Light may affect the eye by stimulating oxygen, leading to the production of highly reactive and damaging compounds called free radicals. Antioxidant vitamins (vitamins C and E and beta carotene) may work against this activated oxygen and help slow progress of macular degeneration.

Among people at high risk for late-stage macular degeneration (those with intermediate AMD in both eyes or advanced AMD in one eye), a dietary supplement of vitamins C, E and beta carotene, along with zinc, lowered the risk of the disease progressing to advanced stages by about 25 to 30 percent. However, the supplements did not appear to benefit people with minimal AMD or those who have no evidence of macular degeneration. For details of the study go to search –www.nei.nih.gov/amd.

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Zinc, one of the most common minerals in our body, is very concentrated in the eye, particularly in the retina and macula. Zinc is necessary for the action of over 100 enzymes, including chemical reactions in the retina. Studies show some older people have low levels of zinc in their blood. Because zinc is important for the health of the macula, supplements of zinc in the diet may slow down the process of macular degeneration.

Remember that vitamin supplements are not a cure for AMD, nor will they restore vision already lost from the disease. However, specific amounts of certain supplements do play a key role in helping some people at high risk for advanced AMD to maintain their vision. Speak with your eye doctor to determine if you are at risk for developing advanced AMD and what nutritional supplements are appropriate for you.

FAQ’s

What is diabetic retinopathy?

Diabetic retinopathy occurs when chronically high blood sugar levels damage the small blood vessels in the retina, the light-sensitive tissue at the back of the eye. This damage can cause the vessels to swell, leak fluid or blood, or lead to the growth of abnormal new blood vessels, ultimately affecting vision.

 

In its early stages, diabetic retinopathy often has no noticeable symptoms. As the condition progresses, symptoms may include:

  • Blurred or fluctuating vision
  • Seeing dark spots, floaters (small spots “floating” in your vision), or empty/dark areas in your field of vision
  • Impaired color vision
  • Difficulty seeing at night
  • Sudden vision loss

Yes, it can be treated, but vision loss that has already occurred may be irreversible. Treatment options depend on the stage and severity of the condition and may include:

  • Careful management of blood sugar, blood pressure, and cholesterol.
  • Laser therapy to seal leaking blood vessels or prevent new abnormal ones from growing.Medication injections into the eye to reduce swelling.
  • Surgery (e.g., a vitrectomy) for advanced cases involving significant bleeding or scar tissue.

The two primary types of laser therapy used to treat diabetic retinopathy are focal laser treatment and panretinal photocoagulation (PRP), also known as scatter laser treatment.

Focal Laser Treatment (Focal Photocoagulation)

Purpose: This treatment is primarily used for diabetic macular edema (DME), a condition where fluid leaks into the macula (the central part of the retina responsible for sharp, detailed vision).

Mechanism: The ophthalmologist identifies specific leaking microaneurysms (small bulges in the blood vessels) or areas of diffuse leakage, often using fluorescein angiography imaging. A focused laser is then used to create small burns that seal these specific leaking vessels, which reduces the fluid buildup and helps stabilize or improve vision.

Application: It is typically used when the macula is swollen but the center is not yet severely damaged.

Panretinal Photocoagulation (PRP) (Scatter Laser Treatment)

Purpose: PRP is the standard treatment for proliferative diabetic retinopathy (PDR), an advanced stage of the disease characterized by the growth of abnormal, fragile new blood vessels on the retina.

Mechanism: The laser is used to apply hundreds of small burns to the peripheral areas of the retina, away from the macula. This process reduces the overall oxygen demand of the retina, which in turn causes the abnormal new blood vessels to shrink and often prevents them from regrowing, thus reducing the risk of severe bleeding (vitreous hemorrhage) and retinal detachment.

Application: The main goal is to preserve existing central vision and prevent severe vision loss, rather than to restore vision that has already been lost.Newer TechniquesMore modern approaches often use advanced laser delivery systems such as pattern scanning lasers (e.g., PASCAL laser) or micropulse laser therapy, which offer advantages such as less pain, less collateral tissue damage, and faster treatment sessions compared to conventional single-spot lasers. These newer techniques use shorter laser pulses or different wavelengths to achieve the desired therapeutic effect with less impact on surrounding healthy tissue.

Who is at risk of developing it?

Anyone with any type of diabetes—type 1, type 2, or gestational—is at risk. The primary risk factors for developing and worsening the condition include:

  • The duration of time a person has had diabetes.
  • Poor control of blood sugar levels (hyperglycemia).
  • High blood pressure and high cholesterol.
  • Smoking.
  • Pregnancy.

Diabetic retinopathy is typically diagnosed through a comprehensive dilated eye exam, during which an eye doctor can view the back of the eye to look for signs of damage. Specialized tests like retinal imaging or fluorescein angiography may also be used to evaluate blood flow and swelling in the retina.

While it cannot always be entirely prevented, the risk of developing or worsening diabetic retinopathy can be significantly lowered by:

  • Maintaining strict control of blood sugar, blood pressure, and cholesterol levels.
  • Adopting a healthy lifestyle, including diet and exercise.
  • Having regular, annual dilated eye exams, as recommended by healthcare providers.
  • For more information and resources, visit the National Eye Institute or the American Diabetes Association.

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