People researching eye vitamins tend to hit the same wall. One eye specialist recommends one brand; another says it has too much zinc. Pharmacy shelves are full of "AREDS2" products that don't quite match each other. And some people ask the simplest question of all: do eye vitamins actually do anything?

This guide untangles it.

The two conditions most people worry about

Age-related macular degeneration (AMD) affects the macula, the small central part of the retina that gives you sharp, detailed vision for reading, driving and recognising faces. It comes in two forms:

  • Dry AMD, the more common type, where yellow deposits called drusen build up under the retina and the macula slowly thins.
  • Wet AMD, where abnormal blood vessels grow under the retina and leak. It can damage vision quickly and is treated with injections into the eye, so sudden changes need urgent attention.

Cataracts are a clouding of the lens at the front of the eye. Over decades, the proteins in the lens are damaged — by oxidation, by sugars binding to them (a process called glycation), and by UV light — and the lens gradually loses its clarity. Cataract surgery is very effective when the time comes.

What the big eye-vitamin studies found

The best evidence comes from two large American trials, AREDS and AREDS2. They found that a specific high-dose combination — vitamin C, vitamin E, lutein, zeaxanthin, zinc and copper — reduced the risk of progressing to advanced AMD by about 25% over five years.

The crucial detail is who benefited: people who already had intermediate AMD, or advanced AMD in one eye. In people with no AMD or only early signs, the formula didn't show a benefit for preventing the disease.

So, practically:

  • If an eye specialist has diagnosed you with intermediate or advanced AMD, a full-dose AREDS2 formula is what the evidence supports. Take what they recommend.
  • If your eyes are healthy, a high-dose AREDS2 product isn't necessary, and the very high zinc dose isn't something to take for no reason.

The zinc confusion

The original trial used 80 mg of zinc a day — well above normal intake — which is why some specialists prefer versions with 25 mg. Later analysis suggested the lower dose may work similarly for many people. If you've been prescribed an AREDS2 formula, let your specialist decide the zinc dose. Don't double up by taking a separate high-zinc product as well.

Where Carnosine Complex fits

Carnosine Complex is not an AREDS2 formula, and we don't present it as one. It's a broad, daily antioxidant formula designed for people who want to support their eyes as they age, built around the different ways eye tissue gets damaged:

Macular pigments

  • Lutein and zeaxanthin are the yellow pigments concentrated in the macula, where they filter blue light and act as antioxidants.
  • Beta-carotene, vitamin A and lycopene add further carotenoid support; vitamin A contributes to normal vision.

Lens and antioxidant support

  • L-carnosine is a natural dipeptide studied for its ability to protect proteins from glycation — the same process that clouds the lens.
  • NAC is a precursor to glutathione, the eye's own main antioxidant.
  • Alpha lipoic acid, CoQ10, vitamin C and vitamin E form an antioxidant network that recycles and supports one another.

Retina and blood vessels

  • DHA (an omega-3) and taurine are both highly concentrated in the retina.
  • Bilberry, grape seed extract, quercetin and citrus bioflavonoids support healthy small blood vessels.
  • Zinc, selenium, copper and B vitamins act as cofactors for the eye's antioxidant enzymes; riboflavin (B2) contributes to normal vision.

Think of it as everyday nutritional support for the eye — not a treatment for any eye disease.

What about screens?

Many people worry that screens are damaging their eyes. The blue light from phones and computers hasn't been shown to damage the retina. What screens do cause is digital eye strain: dryness, tired eyes and headaches, mostly because we blink far less while staring at a screen. Try the 20-20-20 rule: every 20 minutes, look at something about 6 metres (20 feet) away for 20 seconds.

What protects your eyes most

  • Don't smoke. Smoking is the biggest preventable risk factor for AMD and also raises cataract risk.
  • Wear sunglasses with UV protection — important under South Africa's strong sun.
  • Eat leafy greens and colourful vegetables. Spinach, kale and eggs are among the best food sources of lutein; oily fish provides DHA.
  • Control blood pressure, blood sugar and cholesterol, which all affect the blood vessels in the eye.
  • Have regular eye tests, especially after 50 or with a family history of AMD or glaucoma. Glaucoma in particular has no early symptoms and is only picked up by measuring eye pressure and examining the optic nerve.

Get checked urgently if…

…straight lines suddenly look wavy or bent, a dark or blank patch appears in your central vision, or your vision changes suddenly. These can be signs of wet AMD, which is time-sensitive.

Safety: If you already take an AREDS2 formula or another eye or multivitamin supplement, check with your pharmacist or eye specialist before adding Carnosine Complex, to avoid doubling up on vitamin A, zinc and other nutrients. Smokers and ex-smokers should discuss beta-carotene with their doctor. Speak to your doctor first if you're pregnant, breastfeeding or on blood thinners.

This medicine has not been evaluated by SAHPRA. It is not intended to diagnose, treat, cure or prevent any disease.