HSA | FSA CARDS ARE NOW ACCEPTED

Last reviewed: May 12, 2026 Last updated: May 12, 2026

Written by: Jay Hastings , CEO of PlexusDx

Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations. He has more than 20 years of experience across healthcare innovation, genomics, laboratory operations, healthcare investing, and strategic finance. His work has included scaling healthcare startups, leading CLIA lab integrations, and helping expand consumer access to precision health tools.

Medically reviewed by: Jayden Lee, PharmD, EMBA

Jayden Lee, PharmD, EMBA, is the PlexusDx Medical Science Liaison with a PharmD and MBA specializing in pharmacogenomics and clinical product development, with a proven ability to bridge the gap between genomic research and practical patient outcomes. Dr. Lee has more than 10 years of professional experience in clinical pharmacy, academia, and research.

CFH Gene and Age-Related Macular Degeneration: What Your Genotype Means for Vision Health

Age-related macular degeneration, or AMD, is a common cause of central vision loss in older adults. AMD damages the macula, the central part of the retina that gives you sharp detail for reading, driving, and recognizing faces. AMD can be dry, involving buildup of cellular debris under the retina, or wet, involving abnormal growth of blood vessels that leak fluid and blood.

The CFH gene encodes Complement Factor H, a protein that helps regulate the complement system, part of the immune system involved in clearing damaged cells and controlling inflammation. Variations in CFH can change how well Complement Factor H controls inflammation in the eye. Overactive inflammation can contribute to drusen formation and retinal cell damage seen in AMD.

How to Read This Result

  • rs800292 is a common variant in CFH linked to AMD risk.
  • Genotypes are reported as two-letter codes: GG means two copies of the effect allele, AG means one copy, and AA means no effect alleles at this position.
  • Genotype modifies risk but does not determine fate. Age, lifestyle, environment, and other genes also matter.

General Recommendations for Eye Health

Regardless of your genotype, these lifestyle and dietary habits support healthy aging and vision preservation:

  • Eat a nutrient-rich diet with leafy greens, colorful fruits and vegetables, and foods high in lutein and zeaxanthin such as spinach, kale, and corn.
  • Include omega-3 fatty acids from fatty fish like salmon, mackerel, and sardines or consider a fish oil supplement if dietary intake is low.
  • Avoid smoking and limit exposure to secondhand smoke.
  • Wear sunglasses that block UV radiation and reduce blue light exposure where appropriate.
  • Maintain healthy blood pressure and cholesterol through diet, exercise, and routine medical care.
  • Stay physically active to support overall vascular and metabolic health.
  • Schedule regular comprehensive eye exams with dilation to monitor retinal health and detect early signs of AMD.

Diet, Supplements, and Tests to Consider

  • Follow an eye-healthy dietary pattern similar to the Mediterranean diet, emphasizing fish, legumes, whole grains, nuts, and olive oil.
  • Consider a supplement containing lutein, zeaxanthin, zinc, and antioxidant vitamins if you are at increased risk or have early AMD. Discuss formulations and dosages with your eye care provider before starting.
  • Ensure adequate omega-3 intake through diet or supplements if needed.
  • Have regular eye exams including dilated fundus examination and, when indicated, optical coherence tomography or retinal imaging to track changes over time.
  • Manage cardiovascular risk factors such as high blood pressure, high cholesterol, diabetes, and obesity with your healthcare team.

Genetic Interpretation

2 effect alleles (GG) — Increased risk for AMD

If your genotype at rs800292 is GG, you carry two copies of the effect allele. This genotype is associated with an increased risk of age-related macular degeneration. The CFH variant linked to GG may reduce Complement Factor H ability to regulate inflammation in the retina. Reduced control of complement activity can contribute to buildup of cellular debris, formation of drusen, and damage to retinal cells over time.

Important points:

  • Having GG increases susceptibility but does not guarantee you will develop AMD.
  • Risk accumulates with age and is influenced by smoking, diet, systemic health, and other genetic variants.

Practical steps to reduce risk:

  • Adopt an eye-healthy diet rich in leafy greens, colorful vegetables, and omega-3 fatty acids.
  • Discuss with your eye care provider whether a targeted supplement regimen is appropriate for you, particularly formulations that include lutein, zeaxanthin, zinc, and antioxidant vitamins.
  • Quit smoking and avoid secondhand smoke.
  • Wear UV-protective sunglasses and limit unnecessary blue light exposure.
  • Keep blood pressure, cholesterol, and blood sugar under control.
  • Schedule regular dilated eye exams and retinal imaging as recommended by your ophthalmologist.

Because GG indicates higher genetic susceptibility, more frequent monitoring and early intervention when changes are detected can help preserve vision.

1 effect allele (AG) — Likely increased risk for AMD

If your genotype at rs800292 is AG, you carry one copy of the effect allele. This genotype is associated with a likely increased risk of age-related macular degeneration compared with the AA genotype. One copy of the variant may cause a modest reduction in Complement Factor H regulation, possibly contributing to low-level retinal inflammation over many years.

Important points:

  • AG increases risk modestly relative to AA but less than GG.
  • Environmental and lifestyle factors strongly influence whether AMD develops.

Practical steps to reduce risk:

  • Emphasize dietary sources of lutein and zeaxanthin, such as spinach, kale, and eggs.
  • Include omega-3 rich foods or supplements if dietary intake is low.
  • Do not smoke and protect your eyes from UV light with appropriate sunglasses.
  • Maintain regular eye exams and follow up with retinal imaging when recommended.
  • Manage cardiovascular risk factors and stay active to support retinal health.

With one effect allele, preventive lifestyle measures and routine eye care are effective approaches to lowering your overall risk.

0 effect alleles (AA) — Typical risk for AMD

If your genotype at rs800292 is AA, you carry two copies of the non-effect allele. This genotype is associated with typical population risk for age-related macular degeneration at this specific location in CFH. Complement Factor H function is likely intact with respect to control of inflammation in the retina.

Important points:

  • AA does not increase risk at this variant, but AMD can still occur due to age, other genes, or environmental factors.
  • Maintaining healthy habits remains important for long-term vision.

Practical steps to support eye health:

  • Eat a balanced diet with leafy greens, colorful produce, and omega-3 rich fish.
  • Avoid smoking and protect eyes from UV exposure.
  • Consider routine supplements only after discussing with your eye care provider, especially as you age or if early AMD signs appear.
  • Keep regular comprehensive eye exams to identify any early retinal changes.

Even with AA, proactive lifestyle and clinical monitoring help preserve vision as you age.

When to Talk with Your Healthcare Provider

  • If you notice new symptoms such as blurred or distorted central vision, dark or empty areas in your central vision, or changes in color perception, schedule an eye exam promptly.
  • Discuss your genetic results with your primary care provider or an eye specialist to integrate them into your overall risk profile and screening plan.
  • Ask about retinal imaging and whether vitamin or supplement therapy is recommended based on your age, retinal findings, and health status.

PlexusDx does not provide medical advice. This information is educational and intended to help you understand genetic predispositions. Always consult your healthcare provider or eye care specialist before making changes to medications, supplements, or health routines.

If this genetic variant is present in your PlexusDx results, the following tests and reports are commonly used to explore it further:

🧬 Genetic Tests:

🧪 Blood Tests:

📄 Genetic Report:

Frequently Asked Questions About BLINDNESS and CFH rs800292

What does the CFH rs800292 genotype mean for my risk of age-related macular degeneration (AMD)?

The CFH gene helps regulate the eye’s complement system, which controls inflammation and helps clear damaged cells. The rs800292 variant can affect how well Complement Factor H regulates inflammation in the retina. In general, GG means increased AMD risk, AG means likely increased (modest) risk, and AA means typical risk at this location—though genotype modifies risk, it does not guarantee whether AMD will develop.

How does CFH rs800292 influence inflammation, drusen, and retinal damage?

When Complement Factor H regulation is reduced, inflammation in the retina may be less controlled over time. This can contribute to drusen formation (buildup under the retina) and damage to retinal cells, which are key features of AMD. Your rs800292 genotype helps explain part of your inherited susceptibility, while other genes and long-term environmental factors also play important roles.

What eye-health lifestyle and screening steps should I follow based on my rs800292 result?

Regardless of whether your result is GG, AG, or AA, eye-healthy habits can support vision preservation: eat a Mediterranean-style diet rich in leafy greens and colorful produce (especially lutein and zeaxanthin sources), include omega-3 fatty acids (fatty fish or supplements if needed), avoid smoking and secondhand smoke, wear UV-protective sunglasses, manage blood pressure and cholesterol, and stay physically active. Schedule regular comprehensive dilated eye exams, and ask your eye specialist whether retinal imaging (and additional tests like OCT) is appropriate for your risk level. If you notice symptoms like blurred/distorted central vision or dark/empty areas, seek an exam promptly.

What tests can help me learn more about BLINDNESS and CFH rs800292?

The Longevity and Healthy Aging Genetic Test delivers over 200 genetic insights related to cellular repair, inflammation balance, metabolism, cardiometabolic health, and aging pathways. The Healthy Aging Genetic Report translates your results into personalized, actionable guidance. Your healthcare provider can also recommend targeted blood tests based on your specific pathway results and health history to complement your genetic insights with current biomarker data.

Medical and Editorial Standards

Medical review process: This article was reviewed for medical accuracy, scientific clarity, evidence alignment, and appropriate discussion of genetics, medications, supplements, biomarkers, and health-related claims.

Sources and evidence: PlexusDx educational content is developed using peer-reviewed research, clinical literature, reputable medical references, and, where applicable, public health or regulatory guidance. References are included at the end of the article when scientific, medical, or health-related claims are discussed.

Commercial transparency: PlexusDx offers genetic testing, blood biomarker testing, personalized supplement recommendations, and related precision wellness services. Product mentions are intended to help readers understand available options and should not be interpreted as medical advice.

Important disclaimer: PlexusDx educational content is for informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about medications, supplements, genetic testing, lab testing, or health-related care.