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Macular Degeneration: What You Can Do Today to Reduce Your Risk (2025)

 

 

Macular Degeneration: What You Can Do Today to Reduce Your Risk

Age-related macular degeneration is the leading cause of irreversible vision loss in Americans over 50. It eliminates central vision — the sharp, detailed sight used for reading, recognizing faces, and driving. It does not typically cause total blindness, but the central scotoma it produces when advanced is among the most functionally devastating visual impairments a person can experience.

Advanced AMD, particularly geographic atrophy (dry AMD), has no curative treatment. Wet AMD can be managed with anti-VEGF injections that slow progression and sometimes preserve or partially restore vision, but treatment is typically lifelong once begun. The correct approach to AMD is not to wait for a diagnosis and manage it — it is to reduce modifiable risk factors before clinical disease develops.

The modifiable risk factors for AMD include smoking, diet, UV and light exposure, cardiovascular health, and body weight. None of these is the sole cause of AMD; the disease is multifactorial with a strong genetic component. But for individuals with normal or intermediate AMD risk, modifying these environmental factors is the most actionable prevention strategy available. This guide covers each one, with the UV400 and lifestyle measures that have the strongest evidence base.

This is a C22 Anti-Aging & Longevity supporting post. It links back to the cluster pillar atsunglasses, anti-aging and longevity: the complete eye health guide.

 

Quick Answer

The highest-impact modifiable risk reduction actions for AMD, ranked by strength of evidence: stop smoking (largest single modifiable risk factor, 2–4x increased risk for current smokers); maintain a diet rich in lutein, zeaxanthin, and antioxidants (AREDS2 supplements for intermediate AMD); consider UV400 and HEV light management (UV and blue light contribute to RPE oxidative damage); maintain cardiovascular health (hypertension and cardiovascular disease associated with AMD progression); maintain healthy BMI. UV400 sunglasses are one element of a multi-factor risk reduction approach.

 

Table of Contents

1. What AMD Is and How It Progresses
2. The Anatomy of the Macula
3. AMD’s Genetic Basis
4. Smoking: The Largest Modifiable Risk Factor
5. UV and Light Exposure: The Retinal Mechanism
6. The Research Linking Light Exposure to AMD
7. What UV400 Sunglasses Do for AMD Risk
8. Diet and Nutrition: Lutein, Zeaxanthin, and Antioxidants
9. The AREDS2 Trial: Evidence-Based Supplementation
10. Cardiovascular Risk Factors and AMD
11. Monitoring: The Amsler Grid and Regular Examination
12. AMD Stages and When Intervention Matters
13. Comparison Table
14. Best For
15. Common Mistakes
16. Bottom Line
17. FAQs

 

Part 1: What AMD Is and How It Progresses

Age-related macular degeneration is a progressive degenerative disease of the macula — the central 5mm of the retina responsible for sharp central vision. It progresses through defined stages:

Early AMD:characterized by the presence of medium-sized drusen (deposits between the RPE and Bruch’s membrane) or pigmentary abnormalities in the macula. No vision loss at this stage. Many people are in early AMD for years without knowing it.
Intermediate AMD:large drusen (125 micrometers or greater in diameter), or changes in the RPE layer in the absence of late AMD. Possible but minimal vision loss. This is the stage where AREDS2 supplementation has the most evidence for progression risk reduction.
Late AMD (geographic atrophy):advanced dry AMD. Areas of RPE loss and photoreceptor degeneration create regions of visual field loss (scotoma). Central vision is progressively affected. No currently approved treatment can reverse geographic atrophy, though several therapies are in advanced clinical trials.
Late AMD (neovascular / wet):abnormal blood vessel growth under or into the retina (choroidal neovascularization) causes rapid and severe central vision loss if untreated. Treated with anti-VEGF injections (ranibizumab, bevacizumab, aflibercept, faricimab) that can stabilize or partially improve vision but require sustained treatment.

 

Part 2: The Anatomy of the Macula

The macula occupies only a small fraction of the total retinal area but is responsible for virtually all detailed vision. Its central 1.5mm (the fovea) is the area of highest cone photoreceptor density and sharpest resolution. It is also the area with the highest metabolic demand, the highest oxygen consumption, and the most complex support requirements from the RPE.

The RPE — the single cell layer supporting and maintaining the photoreceptors — is the primary target of AMD pathology. RPE cells: recycle the outer segments of photoreceptors that are shed daily, deliver nutrients from the choroidal blood supply to the photoreceptors above, manage the waste products of phototransduction, and protect the photoreceptors from light damage. When RPE cells fail, the photoreceptors they support deteriorate and die.

The macula’s high metabolic activity combined with its intense light exposure — it is the area of the retina at the optical focal point of the eye — makes it the zone of highest cumulative oxidative stress in the body. This is why AMD specifically targets the macula rather than the peripheral retina.

 

Part 3: AMD’s Genetic Basis

AMD has a strong genetic component that significantly modifies individual risk. The two most important genetic risk variants are:

CFH Y402H (rs1061170):a variant in the complement factor H gene, located on chromosome 1. Individuals homozygous for the risk allele have approximately 7–10 times the baseline AMD risk of those with no risk allele. This variant is common — approximately 35% of Europeans carry at least one copy.
ARMS2 A69S (rs10490924):a variant on chromosome 10 associated with a 3–5-fold increase in AMD risk per allele. The combination of CFH risk allele + ARMS2 risk allele produces markedly elevated AMD risk.

Genetic risk for AMD does not determine destiny, but it does establish the starting risk level that environmental and lifestyle factors modify around. An individual with high genetic risk who also smokes, has poor diet, and does not use UV400 protection has dramatically higher cumulative risk than a high-genetic-risk individual who manages all modifiable factors effectively. Conversely, low genetic risk combined with high cumulative modifiable risk (long-term smoking, lifetime UV exposure) can also produce AMD.

Genetic testing for AMD risk variants is available through ophthalmologists and genetic testing services. It is most relevant for individuals with family history of AMD or those diagnosed with early AMD who want to understand their progression risk.

 

Part 4: Smoking — The Largest Modifiable Risk Factor

Smoking is the most strongly evidenced modifiable risk factor for AMD. Current smokers have approximately 2–4 times the AMD risk of non-smokers in most epidemiological studies, with some studies finding higher relative risks in heavy smokers. Former smokers have intermediate risk between current smokers and never-smokers, with risk declining over years of cessation but never fully returning to never-smoker baseline.

The mechanism: smoking causes systemic oxidative stress, reduces plasma antioxidants (including carotenoids, vitamin C, and vitamin E), damages the choriocapillaris blood supply to the RPE, and induces choroidal vasoconstriction that reduces oxygen and nutrient delivery to the macula. These effects compound the direct oxidative damage from light exposure to the RPE.

For any AMD risk discussion, smoking cessation is the first and most impactful behavioral recommendation. Anti-VEGF treatment outcomes are worse in current smokers. AREDS2 supplementation benefits are attenuated in smokers. UV400 protection benefits cannot compensate for the systemic oxidative damage of active smoking. Stopping smoking is the highest-priority modifiable risk reduction action for AMD.

 

Part 5: UV and Light Exposure — The Retinal Mechanism

The mechanism by which light exposure contributes to AMD operates through the RPE’s lipofuscin accumulation and the phototoxicity of its most toxic component, A2E (a bis-retinoid byproduct of the visual cycle):

Lipofuscin accumulation:the RPE accumulates lipofuscin throughout life as a byproduct of photoreceptor outer segment recycling. The rate of accumulation is related to light exposure and antioxidant status. High lipofuscin burden is a risk factor for AMD progression.
A2E phototoxicity:A2E, the primary toxic component of RPE lipofuscin, is specifically activated by blue and near-UV light (430–450nm wavelength). When A2E is excited by this wavelength range, it generates singlet oxygen that damages RPE cell membranes and initiates programmed cell death. This is the cellular mechanism connecting light exposure to RPE cell loss in AMD.
HEV wavelength importance:the relevant wavelength range for A2E phototoxicity (430–450nm) is in the HEV blue-violet range — above 400nm, meaning it is not blocked by UV400 certification alone. Amber and brown lenses that absorb some blue-violet wavelengths provide HEV filtering beyond UV400.
Drusen formation:accumulated RPE damage leads to drusen deposition, the earliest clinical sign of AMD. Drusen represent extracellular deposits of lipid, protein, and complement components from damaged RPE cells.

 

Part 6: The Research Linking Light Exposure to AMD

The EUREYE Study

The EUREYE study, examining 4,753 participants across seven European countries, found a significant association between blue light exposure and the prevalence of advanced AMD. Participants were asked about lifetime sun exposure, time spent outdoors, and use of eye protection. Those in the highest blue light exposure category had significantly elevated odds of advanced AMD compared to those in the lowest category, adjusting for age, sex, smoking, and other confounders.

The Beaver Dam Eye Study — AMD Data

Follow-up analyses of the Beaver Dam Eye Study cohort found associations between sun exposure history and both early AMD (drusen) and the incidence of advanced AMD over 10-year follow-up periods. The association was strongest in participants with the CFH risk genotype — consistent with a gene-environment interaction where UV/light exposure amplifies AMD risk in genetically susceptible individuals.

Blue Mountains Eye Study

The Blue Mountains Eye Study in Australia followed a population cohort over 10 years and found that leisure time sun exposure was positively associated with AMD incidence in individuals with specific AMD risk genotypes. The interaction between sun exposure and genetic risk suggests that UV/light management may be most protective in higher-genetic-risk individuals.

 

Part 7: What UV400 Sunglasses Do for AMD Risk

UV400 sunglasses reduce the UV component (below 400nm) of the retinal light load. This is meaningful for AMD risk because:

UV contributes to RPE oxidative stress:although the A2E phototoxicity mechanism is activated by blue-violet wavelengths (430–450nm) above the UV cutoff, UV radiation also generates ROS in the RPE and its surrounding structures. Reducing total UV load reduces the total oxidative challenge.
Reduced lipofuscin accumulation rate:by reducing the UV component of the total retinal light dose, UV400 sunglasses reduce the rate of lipofuscin accumulation over time. Lower lipofuscin burden means lower A2E concentration available for phototoxic activation by blue light.
Amber tint adds HEV filtering:amber, brown, and darker lenses absorb blue-violet wavelengths (400–500nm) that include the A2E-activating wavelength range. For outdoor activity in high-UV environments, amber UV400 polarized provides both UV blocking and partial HEV filtering beyond what gray UV400 provides.

The caveat:the evidence for UV400 protection specifically reducing AMD incidence or progression in humans is less direct than the UV-cataract evidence. The EUREYE and Beaver Dam findings are observational and involve total light exposure, not isolated UV. The biological mechanism for A2E phototoxicity implicates blue-violet wavelengths above the UV400 cutoff. UV400 sunglasses are a UV-specific intervention that addresses one component of the total retinal light load relevant to AMD.

 

Part 8: Diet and Nutrition — Lutein, Zeaxanthin, and Antioxidants

Dietary antioxidants play an important role in AMD risk because the retina’s high metabolic activity generates significant oxidative stress that dietary antioxidants help neutralize. The most directly relevant dietary factors:

Lutein and Zeaxanthin

Lutein and zeaxanthin are the primary carotenoids that accumulate in the macula as the macular pigment. Macular pigment absorbs blue light before it reaches the photoreceptors and RPE, functioning as a natural blue-light filter. Higher macular pigment optical density (MPOD) is associated with lower AMD risk in prospective studies. Dietary intake of lutein and zeaxanthin from dark leafy greens (kale, spinach, collards), eggs, and corn increases MPOD.

Antioxidant Vitamins

Vitamins C and E are water-soluble and fat-soluble antioxidants respectively that support the retina’s oxidative defense. The AREDS and AREDS2 trials included high-dose vitamins C and E in the supplementation formula tested for AMD risk reduction.

Omega-3 Fatty Acids

DHA (docosahexaenoic acid) is the primary omega-3 in retinal photoreceptor membranes. Higher dietary omega-3 intake from oily fish is associated with reduced AMD risk in observational studies. The AREDS2 trial did not find significant benefit from omega-3 supplementation on AMD progression in an already-supplemented population, but dietary fish intake remains associated with AMD risk in epidemiological data.

Zinc

Zinc is a cofactor for many retinal enzymes and antioxidant systems. The original AREDS formula found that high-dose zinc supplementation reduced AMD progression in high-risk patients. AREDS2 included zinc as part of the core formula.

 

Part 9: The AREDS2 Trial — Evidence-Based Supplementation

The Age-Related Eye Disease Study 2 (AREDS2) was a major randomized clinical trial testing nutritional supplements for AMD progression. Published in JAMA in 2013, it enrolled 4,203 participants with intermediate or advanced AMD in one eye and followed them for 5 years.

Key findings: the AREDS2 formula (vitamins C 500mg, E 400 IU, zinc 80mg, copper 2mg, lutein 10mg, zeaxanthin 2mg) reduced the risk of AMD progressing to advanced stages by approximately 25% compared to placebo in high-risk participants. The substitution of lutein/zeaxanthin for beta-carotene (used in the original AREDS formula) provided similar efficacy without the elevated lung cancer risk in former smokers associated with high-dose beta-carotene.

The AREDS2 formula is evidence-based for individuals with intermediate AMD or advanced AMD in one eye. It is not indicated for individuals with no AMD or only early (small drusen) AMD, for whom the benefit is not established. The correct use is in consultation with an ophthalmologist who has evaluated AMD stage.

The relationship to UV400 sunglasses:AREDS2 supplementation supports the RPE’s antioxidant defense capacity. UV400 and HEV light management reduces the oxidative load that the supplementation is defending against. Both are complementary strategies.

 

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Part 10: Cardiovascular Risk Factors and AMD

AMD and cardiovascular disease share several risk factors and biological mechanisms, consistent with their common theme of endothelial and vascular aging:

Hypertension:elevated blood pressure is associated with AMD progression, likely through effects on choroidal blood flow and vascular integrity. Management of hypertension through lifestyle and medication is associated with reduced AMD progression risk.
Obesity and BMI:higher BMI is associated with elevated AMD risk, potentially through systemic inflammatory and oxidative mechanisms. Dietary patterns associated with lower AMD risk (Mediterranean diet, high antioxidant intake) are also associated with lower BMI.
Physical activity:observational studies have found that higher levels of physical activity are associated with lower AMD risk and slower progression, likely through cardiovascular and anti-inflammatory mechanisms.
Mediterranean diet pattern:adherence to a Mediterranean dietary pattern — high in olive oil, fish, vegetables, fruits, and nuts; low in processed foods and red meat — is associated with reduced AMD incidence and progression in multiple cohort studies. This pattern combines high antioxidant intake, anti-inflammatory omega-3s, and cardiovascular benefit.

 

Part 11: Monitoring — The Amsler Grid and Regular Examination

AMD prevention requires active monitoring to detect progression from early to late stages, because the treatment for wet AMD is most effective when initiated early — before substantial permanent photoreceptor loss has occurred.

Amsler Grid

The Amsler grid is a simple monitoring tool: a card or screen display of a grid with a central fixation point, used by the patient at home to detect new visual distortion or gaps in the grid that may indicate AMD progression (particularly the onset of neovascular/wet AMD). Patients with intermediate AMD should use the Amsler grid daily for each eye separately, reporting any changes to their ophthalmologist promptly.

Regular Dilated Fundus Examination

Comprehensive dilated eye examination with fundus photography is the standard clinical monitoring for AMD. Optical coherence tomography (OCT) provides detailed imaging of retinal layers and drusen, and is the primary imaging modality for AMD staging and progression monitoring. The examination schedule recommended by the AAO:

No AMD, age 40–54: every 1–3 years
No AMD, age 55–64: every 1–2 years
No AMD, age 65+: annually
Early or intermediate AMD: annually or more frequently as clinically indicated
One eye with advanced AMD: every 3–6 months to monitor fellow eye

 

Part 12: AMD Stages and When Intervention Matters

 

AMD Stage

Clinical Features

Vision Loss

Key Intervention

Early

Small-medium drusen; mild RPE changes

None

Lifestyle modification: UV400, smoking cessation, diet; monitoring

Intermediate

Large drusen (≥125μm); RPE abnormalities

Possible mild

AREDS2 supplementation; continued lifestyle modification; close monitoring

Late — Geographic atrophy

RPE and photoreceptor loss; visible atrophy on exam

Progressive central loss

AREDS2 continued; close monitoring; emerging complement inhibitor therapies

Late — Neovascular (wet)

Choroidal neovascularization; fluid on OCT

Rapid if untreated

Anti-VEGF injections (urgent); continued AREDS2; monitoring fellow eye

 

Part 13: Comparison Table — AMD Risk Reduction Interventions

 

Intervention

Evidence Strength

AMD Risk Reduction Effect

Notes

Smoking cessation

Very strong

2–4x risk reduction vs current smoking

Largest modifiable factor; affects all AMD types

AREDS2 supplementation

Strong (RCT)

~25% progression reduction in intermediate AMD

Only for intermediate or advanced AMD in one eye; consult ophthalmologist

UV400 sunglasses (daily)

Moderate (observational)

Reduces UV component of retinal light load

Addresses UV-driven RPE oxidative damage; one component

Amber/HEV-filtering lenses

Preliminary

May reduce blue-violet A2E activation

Limited direct human trial evidence; biological mechanism supported

Lutein/zeaxanthin diet

Moderate (observational)

Higher MPOD associated with lower AMD risk

Dietary intake preferred; included in AREDS2 formula

Mediterranean diet

Moderate (cohort)

Lower AMD incidence in adherent populations

Anti-inflammatory; antioxidant-rich; cardiovascular benefit

Hypertension management

Moderate

Reduced choroidal vascular damage

General cardiovascular health benefit compounds AMD benefit

Physical activity

Moderate (observational)

Reduced AMD incidence in active individuals

Cardiovascular and anti-inflammatory mechanisms

Regular eye examination

Strong (clinical standard)

Enables early intervention for wet AMD

Amsler grid daily; dilated exam per AAO schedule

 

Part 14: Best For

UV400 Polarized Daily Outdoor Use — Best For:

All adults as a primary prevention measure for UV-driven RPE oxidative stress, especially those with family history of AMD or high-UV geographic locations or occupations
Individuals with early AMD looking to reduce the modifiable environmental UV component of their total risk

 

Amber Polarized UV400 — Best For:

Individuals who want both UV400 protection and the added blue-violet filtering benefit relevant to A2E phototoxicity, particularly for outdoor activity contexts where amber’s contrast enhancement is also valuable

 

Part 15: Common Mistakes

Waiting until AMD is diagnosed to modify lifestyle risk factors:the prevention window is before clinical AMD develops. UV400 protection, diet, and smoking cessation are most impactful when begun years or decades before the disease presents clinically.
Taking AREDS2 supplements without AMD (or with only early AMD):AREDS2 is evidence-based specifically for intermediate AMD. Self-prescribing these supplements for primary prevention in healthy eyes is not supported by the AREDS2 data and may not be appropriate. Consult an ophthalmologist for supplementation decisions.
Treating AMD risk management as either/or between lifestyle and UV400:AMD is multifactorial. The effective risk reduction approach combines smoking cessation, diet, UV400, cardiovascular health management, and regular monitoring. No single intervention substitutes for the others.
Not using the Amsler grid daily for intermediate AMD monitoring:the Amsler grid is a free, at-home daily monitoring tool for AMD progression. Early detection of wet AMD onset allows prompt treatment that preserves significantly more vision than delayed treatment.

 

Bottom Line

AMD is the leading cause of irreversible vision loss in Americans over 50, and its burden will grow as the population ages. It is also partially preventable and substantially manageable through early detection and intervention. The modifiable risk factors — smoking, diet, UV/light exposure, cardiovascular health — collectively represent a significant proportion of population AMD burden.

The evidence-based action plan: stop smoking (most important), adopt a Mediterranean or anti-inflammatory dietary pattern with high lutein and zeaxanthin intake, wear UV400 sunglasses consistently outdoors (with amber tint for additional HEV benefit in outdoor activity contexts), manage blood pressure and cardiovascular risk factors, and establish a regular ophthalmologic examination schedule that detects AMD early enough for intervention when it matters.

UV400 sunglasses are one component of this plan — an affordable, daily, outdoor habit that reduces one of the modifiable environmental contributors to RPE oxidative damage. At $30 per Navi pair, the UV component of AMD risk reduction has a lower cost-per-year than virtually any other evidence-based health intervention.

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Frequently Asked Questions

 

Can I prevent macular degeneration?

You can reduce your risk of developing AMD and slow its progression through modifiable lifestyle factors. The strongest evidence supports: stopping smoking (2–4x reduced risk for current smokers who quit), adopting a diet rich in lutein, zeaxanthin, and antioxidants, using UV400 sunglasses consistently outdoors to reduce UV-driven RPE oxidative stress, and maintaining cardiovascular health. AMD cannot be fully prevented (genetic factors are beyond modification), but the modifiable factors collectively represent a significant share of AMD risk.

Does wearing sunglasses prevent macular degeneration?

UV400 sunglasses reduce the UV component of total retinal light exposure, which contributes to the RPE oxidative stress that is central to AMD pathology. The EUREYE study and the Beaver Dam Eye Study both found associations between cumulative light exposure and AMD risk. The biological mechanism (A2E phototoxicity from blue-violet light) involves wavelengths above 400nm (not fully blocked by UV400 alone), but UV exposure also contributes through direct RPE oxidative damage. UV400 sunglasses are one component of a multi-factor AMD risk reduction approach.

What are the most important things I can do to reduce AMD risk?

In order of evidence strength: stop smoking (the largest single modifiable risk factor), maintain a high-antioxidant diet with dark leafy greens and eggs (for lutein and zeaxanthin), consider AREDS2 supplementation if you have intermediate AMD or advanced AMD in one eye (consult your ophthalmologist), wear UV400 sunglasses outdoors consistently, maintain healthy blood pressure and cardiovascular health, exercise regularly, and have regular dilated eye examinations on the AAO-recommended schedule.

What are AREDS2 supplements and should I take them?

AREDS2 is a specific supplement formula tested in a major NIH-funded randomized trial: vitamins C 500mg and E 400 IU, zinc 80mg, copper 2mg, lutein 10mg, and zeaxanthin 2mg. The trial found approximately 25% reduction in AMD progression risk in participants with intermediate AMD or advanced AMD in one eye. AREDS2 is not indicated for people with no AMD or early AMD; the benefit was not demonstrated in those populations. Consult your ophthalmologist before starting AREDS2.

How does smoking affect macular degeneration risk?

Smoking is the most strongly evidenced modifiable risk factor for AMD. Current smokers have approximately 2–4 times the AMD risk of non-smokers. Smoking reduces systemic antioxidants, damages the choroidal blood supply to the RPE, and induces choroidal vasoconstriction. Former smokers have intermediate risk, with risk declining over years of cessation. Stopping smoking is the highest-priority AMD prevention action for anyone who smokes.

Does diet affect macular degeneration risk?

Yes. Lutein and zeaxanthin — found in dark leafy greens (kale, spinach, collards), eggs, and corn — accumulate in the macula as macular pigment that absorbs blue light before it reaches the photoreceptors and RPE. Higher macular pigment optical density is associated with lower AMD risk. A Mediterranean dietary pattern (high in vegetables, fruit, fish, olive oil; low in processed foods) is associated with reduced AMD incidence in multiple cohort studies.

What is the Amsler grid and should I use one?

The Amsler grid is a simple home monitoring tool — a printed or screen-displayed grid with a central fixation point. By looking at the center point with one eye at a time, the user can detect distortion, waviness, or blank areas in the grid that may indicate AMD progression, particularly the onset of wet AMD. People with intermediate AMD should use it daily for each eye separately. Any change should prompt prompt ophthalmologist contact. Wet AMD treated early preserves significantly more vision than wet AMD treated after significant progression.

How often should I have my eyes examined for AMD?

AAO recommendations: no AMD at age 55–64, every 1–2 years; no AMD at 65+, annually; early or intermediate AMD, annually or more frequently as recommended by your ophthalmologist; one eye with advanced AMD, every 3–6 months to monitor the fellow eye. If you have AMD risk factors (family history, smoking history, known CFH/ARMS2 genetic risk variants), earlier and more frequent monitoring may be appropriate.

 

 

Supporting Articles

 

 

 

 

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SOURCES & CITATIONS

[1]  Age-Related Eye Disease Study 2 Research Group.“Lutein + zeaxanthin and omega-3 fatty acids for age-related macular degeneration: the AREDS2 randomized clinical trial.”JAMA, 2013.View source

[2]  Fletcher AE, Bentham GC, Agnew M, et al..“Sunlight exposure, antioxidants, and age-related macular degeneration.”Archives of Ophthalmology, 2008.View source

[3]  Cruickshanks KJ, Klein R, Klein BE, Nondahl DM.“Sunlight and the 5-year incidence of early age-related maculopathy: the Beaver Dam Eye Study.”Archives of Ophthalmology, 2001.View source

[4]  Seddon JM, Ajani UA, Sperduto RD, et al..“Dietary carotenoids, vitamins A, C, and E, and advanced age-related macular degeneration.”JAMA, 1994.View source

[5]  Chakravarthy U, Augood C, Bentham GC, et al..“Cigarette smoking and age-related macular degeneration in the EUREYE Study.”Ophthalmology, 2007.View source

[6]  American Academy of Ophthalmology.“Preferred practice pattern: age-related macular degeneration.”Ophthalmology, 2019.View source

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