The Visivra Blog
The Visivra blog: eye health, supplement ingredients and the evidence
The Visivra blog collects evidence-based guides to eye-health nutrition: the carotenoids named in the Visivra capsules, the AREDS2 research behind them, how capsules compare with gummies and drops, and the honest limits of what any eye supplement can claim. Reviewed by the Visivra Editorial Team.
Lutein & Zeaxanthin: The EvidenceWhat the AREDS2 trial data show, and where it stops.
Lutein vs ZeaxanthinWhat each carotenoid does in the retina.
Meso-Zeaxanthin ExplainedThe third macular carotenoid at the retina's centre.
How Long Does Lutein Take?A trial-based timeline from blood levels to vision.
Lutein: Foods vs A CapsuleHow much spinach really equals a 10 mg capsule.
Lutein, Glare & Night DrivingWhat the placebo-controlled glare trials found.
Astaxanthin & Eye FatigueWhat the screen-worker trials actually measured.
Bilberry & Night VisionTwelve trials, and what they really showed.
Saffron & Macular FunctionSmall trials, crocin and crocetin, honest limits.
Zinc: How Much Is Enough?AREDS doses, the 25 mg arm and the upper limit.
Vitamin C & E For EyesThe AREDS doses and why they work together.
Beta-Carotene & SmokersWhy AREDS2 dropped beta-carotene, and the risk.
Eye Supplement Side EffectsZinc, beta-carotene and vitamin E — the real cautions.
Omega-3 & Dry EyeWhat the DREAM trial and AREDS2 found.
The AREDS2 Formula, Dose By DoseEvery ingredient and amount, side by side.
How To Read An Eye Supplement LabelThe six numbers that actually matter.
Why Doses Vary So MuchWhy two eye formulas can look nothing alike.
Gummies vs CapsulesDose, stability and sugar — which wins.
Take Them With FoodWhy a little fat improves carotenoid uptake.
Foods For Eye HealthA practical nutrient map for your plate.
Eye Supplements & Screen TimeWhat carotenoids can and cannot do.
Do Blue-Light Glasses Work?The evidence, without the hype.
Contrast Sensitivity ExplainedThe vision measure the eye chart misses.
Photostress RecoveryHow fast your eyes reset, and why it matters.
Do Carrots Improve Night Vision?Busting a wartime myth with the science.
Do Eye Exercises Work?What they can and cannot change.