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Hashemi Eye Care - Neuroscience Institute and Research Center

Dry Age-Related Macular Degeneration (Dry AMD)

The most common form of AMD, causing gradual central vision loss. Learn about stages, risk factors, AREDS supplements, and monitoring for progression.

7 min read

Dry age-related macular degeneration (AMD) is the most common form of macular degeneration, accounting for about 80-90% of AMD cases. It causes gradual central vision loss due to deterioration of the macula—the part of the retina responsible for sharp, detailed vision. While there's no cure, progression can be slowed with proper management.

Key Takeaways

  • Most common cause of vision loss in people over 50 in developed countries
  • Affects central vision—needed for reading, driving, recognizing faces
  • Progresses slowly over years in most cases
  • AREDS2 supplements can reduce progression risk by about 25% in intermediate/advanced stages
  • Can convert to wet AMD—know the warning signs
  • No treatment for early stages—but lifestyle modifications help

Fundoscopic view of dry age-related macular degeneration showing yellow drusen deposits and geographic atrophy beneath the macula, alongside an Amsler grid with a central distorted blurred area

Understanding the Macula

The macula is the central part of the retina, containing the highest concentration of photoreceptors. It provides:

  • Sharp central vision
  • Color perception
  • Ability to see fine details
  • Vision for reading, driving, facial recognition

In dry AMD, the macula deteriorates over time, causing gradual central vision loss while peripheral vision typically remains intact.

Stages of Dry AMD

Early AMD

  • Drusen: Small or medium yellow deposits under retina
  • No pigment changes
  • No vision loss
  • Most people are unaware they have it
  • Found incidentally during eye exam

Intermediate AMD

  • Medium to large drusen
  • May have pigment changes
  • Some people notice mild symptoms
  • Blurred vision may begin
  • Difficulty in dim lighting

Advanced Dry AMD (Geographic Atrophy)

  • Geographic atrophy: areas of RPE and photoreceptor loss
  • Significant central vision loss
  • Blind spots in central vision
  • Difficulty reading, driving, recognizing faces

Symptoms

Early Disease

Often none. This is why regular eye exams are important.

As Disease Progresses

  • Blurred central vision
  • Need for brighter light when reading
  • Difficulty adapting to dim lighting
  • Printed words appear blurry
  • Colors seem less vivid
  • Difficulty recognizing faces
  • Blank or dark spot in central vision (advanced)
  • Straight lines appear wavy (may signal conversion to wet AMD)

Risk Factors

Non-Modifiable

  • Age—risk increases significantly after 50
  • Family history—2-3x higher risk with affected first-degree relative
  • Race—more common in Caucasians
  • Light eye color—slightly higher risk
  • Genetics—CFH, ARMS2, and other gene variants

Modifiable

  • Smoking—2-4x higher risk; most important modifiable factor
  • Obesity—increased risk and faster progression
  • Cardiovascular disease and hypertension
  • Diet low in antioxidants and leafy greens
  • Excessive sun exposure

Diagnosis

Comprehensive Eye Examination

Imaging

OCT (Optical Coherence Tomography)

  • Detailed cross-sectional macula imaging
  • Identifies drusen, atrophy, fluid
  • Monitors progression

Fundus Autofluorescence

  • Shows areas of RPE damage
  • Identifies geographic atrophy extent

Fundus Photography

  • Documents drusen and pigment changes
  • Allows comparison over time

Fluorescein Angiography

  • If wet AMD suspected
  • Not routinely needed for dry AMD

Treatment

Early AMD

  • No specific treatment proven effective
  • Regular monitoring (every 1-2 years)
  • Lifestyle modifications
  • AREDS2 supplements not shown to help at this stage

Intermediate AMD

AREDS2 Supplements

  • Proven to reduce progression risk by about 25%
  • Formula: Vitamin C, Vitamin E, Zinc, Copper, Lutein, Zeaxanthin
  • Do NOT contain beta-carotene (linked to lung cancer in smokers)
  • Available over the counter
  • Discuss with your doctor before starting

Lifestyle Modifications

  • Stop smoking
  • Eat leafy green vegetables
  • Maintain healthy weight
  • Control blood pressure
  • Protect eyes from UV light
  • Regular exercise

Advanced Dry AMD (Geographic Atrophy)

Newer Treatments

  • Complement inhibitors (pegcetacoplan, avacincaptad pegol) FDA-approved
  • Given as intravitreal injections
  • Slow the rate of geographic atrophy growth
  • Have not yet demonstrated improvement in visual acuity in clinical trials
  • Discuss benefits, risks, and realistic expectations with a retina specialist

Low Vision Rehabilitation

  • Maximizes remaining vision
  • Magnification devices
  • Adaptive techniques
  • Lighting optimization

Monitoring at Home

Amsler Grid Self-Testing

Check your Amsler grid regularly (daily or weekly):

  1. Use proper reading glasses or contacts
  2. Cover one eye
  3. Look at center dot
  4. Note any changes: wavy lines, missing areas, distortion
  5. Repeat with other eye

Report new distortion immediately—may indicate conversion to wet AMD.

Conversion to Wet AMD

About 10-15% of dry AMD cases convert to wet AMD, which causes faster vision loss but is treatable with injections.

Warning Signs of Conversion

  • Sudden increase in distortion
  • New wavy appearance of straight lines
  • New blank spot in central vision
  • Rapid decrease in vision

What Happens in Wet AMD

  • Abnormal blood vessels grow under retina
  • Vessels leak fluid and blood
  • Causes rapid damage to macula
  • Treatable with anti-VEGF injections

Report any sudden visual changes immediately.

Living with Dry AMD

Practical Adaptations

  • Use brighter lights for reading
  • Magnifying devices
  • Large-print books and materials
  • Screen magnification on devices
  • Audiobooks and text-to-speech
  • High-contrast settings

Emotional Support

  • Vision loss can be emotionally challenging
  • Support groups available
  • Counseling may help
  • Many people maintain independence with adaptations

Driving

  • Central vision loss affects driving ability
  • Regular vision assessments needed
  • May need to modify driving habits
  • Eventually may need to stop driving

Frequently Asked Questions

Will I go blind?

Dry AMD rarely causes complete blindness. It primarily affects central vision while peripheral vision is usually preserved. Most people maintain enough vision for daily activities, though reading and driving may become difficult.

Should I take AREDS2 vitamins?

If you have intermediate AMD or advanced AMD in one eye, AREDS2 supplements have been proven to reduce progression risk by about 25%. For early AMD, there's no proven benefit. Discuss with your doctor.

How often do I need eye exams?

Frequency depends on your stage:

  • Early AMD: every 1-2 years
  • Intermediate AMD: every 6-12 months
  • Advanced AMD: as recommended (may be every few months)

Is dry AMD hereditary?

Genetics plays a significant role. If a first-degree relative has AMD, your risk is 2-3 times higher. However, lifestyle factors also matter significantly.

What's the difference between dry and wet AMD?

Dry AMD is gradual deterioration of the macula without fluid or bleeding. Wet AMD involves growth of abnormal blood vessels that leak. Wet AMD progresses faster but is treatable with injections. Dry AMD can convert to wet AMD.

Can diet really help?

Yes. Studies show that diets high in leafy green vegetables (spinach, kale), fish (omega-3 fatty acids), and colorful fruits and vegetables are associated with lower AMD risk and slower progression.

References

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