Retina Clear vs. AREDS2: The Full Comparison

What AREDS2 Actually Was

The Age-Related Eye Disease Study 2 (AREDS2) was a large, NIH-funded clinical trial run by the National Eye Institute. It tested a specific nutrient formula in people who already had intermediate or advanced age-related macular degeneration (AMD) — not the general population looking for everyday eye support.

Why Beta-Carotene Was Removed

The original AREDS formula (from the 1990s) included beta-carotene. Two separate large trials, CARET and ATBC, had already found that beta-carotene supplementation increased lung cancer risk specifically in smokers and recent former smokers. AREDS2 tested removing beta-carotene and replacing it with lutein and zeaxanthin instead — and found the substitution worked at least as well, without the smoking-related risk. Since 2013, beta-carotene-free has been the standard recommendation for this category.

The Full Comparison

Nutrient	AREDS2 Studied Dose	Retina Clear's Disclosed Dose
Vitamin A / Beta-Carotene	Removed in 2013	450mcg RAE (as beta-carotene)
Lutein	10mg	Undisclosed (in 351mg blend)
Zeaxanthin	2mg	Undisclosed (in 351mg blend)
Vitamin C	500mg	90mg
Vitamin E	400 IU	15mg
Zinc	25–80mg	11mg
Copper	2mg	0.9mg

What This Means, Practically

Retina Clear is not an AREDS2-formula product, and shouldn't be evaluated as one. Its vitamin and mineral doses sit well below AREDS2's studied amounts across the board, and it retains beta-carotene, which AREDS2's own research led it to remove. That doesn't make Retina Clear inherently harmful for a non-smoker at these doses — but it does mean the comparison to "clinically studied eye formula" territory doesn't hold up cleanly.

One Thing Retina Clear Gets Right

The formula correctly pairs copper (0.9mg) with its zinc content (11mg). This matters because sustained high-dose zinc supplementation without copper can lead to copper deficiency over time — a detail some competing eye-health formulas miss entirely.