Frequently Asked Questions
What is the most common cause of vision loss in seniors?
Age-related macular degeneration (AMD) is the leading cause of severe vision loss in Americans over 65. Glaucoma is the leading cause of irreversible blindness worldwide. Cataracts cause more vision impairment globally than any other condition. Diabetic retinopathy is the leading cause of blindness in working-age adults — and increasingly in seniors with diabetes.
How can seniors prevent macular degeneration?
AMD prevention strategies with evidence: not smoking (smokers have 3x higher AMD risk), eating leafy greens and orange/yellow vegetables high in lutein and zeaxanthin, maintaining healthy blood pressure and cholesterol, protecting eyes from UV light with sunglasses, and taking AREDS2 supplements if you have intermediate or advanced AMD (reduces progression risk by 25%). Regular eye exams for early detection are essential.
Can you prevent glaucoma?
Primary open-angle glaucoma (the most common type) has no known prevention — but vision loss from glaucoma is largely preventable with early detection and treatment. The challenge: glaucoma causes no symptoms until significant vision loss has already occurred. Annual eye exams including optic nerve evaluation and intraocular pressure check are the only way to detect glaucoma before vision loss occurs. Medicare covers annual glaucoma screening for high-risk individuals.
How often should seniors have eye exams?
Seniors over 65 should have a comprehensive dilated eye exam every 1–2 years — annually for those with diabetes, glaucoma history, or AMD. This is distinct from a routine vision exam for glasses — a comprehensive exam includes dilation to examine the retina, optic nerve, and macula. Medicare Part B covers comprehensive eye exams for specific medical conditions including diabetes and glaucoma screening for high-risk seniors.
What vitamins are good for eye health?
Lutein (10mg) and zeaxanthin (2mg) are the most evidence-backed nutrients for macular health — they concentrate in the macula and filter harmful blue light. The AREDS2 formula (lutein 10mg, zeaxanthin 2mg, vitamin C 500mg, vitamin E 400 IU, zinc 80mg) reduces the risk of advanced AMD progression by 25% in people with intermediate AMD. Omega-3 (EPA+DHA) supports tear film and reduces dry eye.
Four eye conditions account for most vision loss after age 60: macular degeneration, glaucoma, cataracts, and diabetic retinopathy. All four are either preventable, detectable before vision loss, or treatable when caught early. Understanding your risk and accessing the right screenings is the most impactful thing you can do for your long-term vision.
Age-Related Macular Degeneration (AMD)
AMD damages the macula — the central part of the retina responsible for sharp, detailed vision. It causes blurring or loss of central vision, making faces, reading, and driving increasingly difficult. AMD rarely causes complete blindness — peripheral vision is typically preserved — but the loss of central vision is profoundly disabling.
Risk factors: Age over 60, smoking (3x higher risk), family history, cardiovascular risk factors, UV light exposure, low dietary lutein and zeaxanthin.
Prevention/reduction: Stop smoking (the most impactful modifiable risk), eat leafy greens and eggs (lutein and zeaxanthin sources), protect eyes with UV-blocking sunglasses, maintain healthy blood pressure and cholesterol.
Treatment for advanced AMD: Wet AMD (the more aggressive form) is treated with anti-VEGF injections — Eylea (aflibercept) or Lucentis (ranibizumab) — administered into the eye monthly or bimonthly. These injections halt or reverse vision loss in most patients. Medicare Part B covers anti-VEGF injections as physician-administered drugs. Early treatment is critical — do not delay referral to a retinal specialist.
Glaucoma — The Silent Thief of Sight
Glaucoma damages the optic nerve — usually from elevated intraocular pressure — causing progressive, irreversible peripheral vision loss. The tragedy: there are no symptoms until significant damage has occurred. Annual eye exams are the only protection against undetected glaucoma. High-risk groups — family history, diabetes, African Americans over 50, Hispanic Americans over 65 — qualify for free annual glaucoma screening under Medicare.
Treatment: Eye drops to lower intraocular pressure are the standard first treatment. Laser therapy (SLT) and surgical procedures are used when drops are insufficient. Treatment halts progression — lost vision cannot be recovered.
Cataracts — Treatable and Medicare-Covered
Cataracts are a clouding of the eye's natural lens. Nearly everyone develops cataracts with age — by 80, more than half of Americans either have cataracts or have had cataract surgery. Symptoms include blurry, hazy, or faded vision, glare and halos around lights, and increasing difficulty with night driving. Surgery is safe, effective, and Medicare-covered when medically necessary. See our complete cataract surgery coverage guide.
Diabetic Retinopathy
Diabetes damages retinal blood vessels, causing progressive vision loss — the leading cause of new blindness in American adults. The risk is directly tied to blood sugar control and duration of diabetes. Control blood sugar, blood pressure, and cholesterol to reduce retinopathy risk. Medicare covers annual dilated eye exams for all diabetes patients at $0 — use this benefit every year, even if your vision seems unchanged.
Daily Eye Protection Habits
- UV-blocking sunglasses: Wear outdoors year-round — UV exposure is cumulative and accelerates both AMD and cataract development
- 20-20-20 rule: Every 20 minutes of screen time, look at something 20 feet away for 20 seconds — reduces eye strain
- Adequate lighting: Good lighting for reading reduces eye strain significantly
- Stop smoking: The single most impactful modifiable eye health action — reduces AMD risk by 67%
- Annual comprehensive eye exam: The only way to catch glaucoma and AMD before vision loss
- Schedule a comprehensive dilated eye exam annually — not just a vision check
- If you have diabetes, your annual retinal exam is free under Medicare — use it
- Eat leafy greens and eggs regularly for lutein and zeaxanthin
- Wear UV-blocking sunglasses outdoors every day
- If you have intermediate AMD, discuss AREDS2 supplements with your ophthalmologist
→ Medicare Cataract Surgery Coverage
→ Medicare Vision Benefits 2026
→ Diabetic Eye Exam — Free Under Medicare