Cataracts
A cataract is a clouding of one or both lenses of the eye that can cause blurry vision, glare, poor night vision, double vision, and seeing colors that seem faded. Cataracts are a leading cause of blindness.
Quick Answer
What it is
A cataract is a clouding of one or both lenses of the eye that can cause blurry vision, glare, poor night vision, double vision, and seeing colors that seem faded. Cataracts are a leading cause of blindness.
Key findings
- Grade C: Nuclear Cataract Risk (Zeaxanthin)
- Grade D: All-Cause Mortality (Vitamin E)
- Grade D: Cataract Risk (Idebenone)
Safety
No specific caution or interaction language was detected in the current summary/outcome notes.
ℹ️ Quick Facts
Quick Facts: Cataracts
- Supplements Studied:2
- Research Trials:2
- Total Participants:12,583
- Top Supplement:Zeaxanthin (C)
Evidence-Based Protocol
Supplement stack ranked by research quality
Primary Stack (Tier 1)
Macular carotenoids that filter blue light and provide antioxidant protection; accumulate in lens and may reduce cataract risk
Major antioxidant in lens fluid; protects against oxidative damage; higher intake associated with reduced cataract risk
Supporting Stack (Tier 2)
Fat-soluble antioxidant; protects lens membranes; some epidemiological evidence for cataract prevention
Anti-inflammatory; supports overall eye health; some evidence for reduced cataract progression
Addresses multiple micronutrient needs; long-term use associated with reduced cataract risk in some studies
Topical antioxidant; limited evidence for improving lens clarity in early cataracts
Powerful antioxidant; regenerates other antioxidants; some evidence for lens protection
Contains anthocyanins with antioxidant properties; traditionally used for eye health
Deficiency associated with increased cataract risk in some studies
How It Works
Cataracts are clouding of the eye's natural lens, causing blurry vision, glare, and eventually vision loss if untreated. They are the leading cause of blindness worldwide and are extremely common with aging - by age 80, more than half of Americans have a cataract or have had cataract surgery.
RISK FACTORS for cataracts include:
THE ONLY PROVEN TREATMENT is cataract surgery, which is highly effective and one of the most common surgeries performed. However, nutritional approaches may help delay cataract development.
PREVENTIVE STRATEGIES:
* Lutein and Zeaxanthin are carotenoids that accumulate in the lens and retina. They filter harmful blue light and provide antioxidant protection. Higher dietary intake is associated with reduced cataract risk.
* Vitamin C is the primary antioxidant in lens fluid. The lens has the highest concentration of vitamin C of any tissue in the body. Higher intakes are associated with reduced cataract risk.
* Vitamin E provides fat-soluble antioxidant protection.
* N-Acetyl Carnosine eye drops have limited evidence for early cataracts but are not a substitute for surgery when needed.
Expected timeline: Prevention is a long-term strategy. Once cataracts significantly impair vision, surgery is the only effective treatment.
Supplements for Cataracts
Sorted by strength of evidence
Detailed Outcomes
Research Citations (100)
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