Quick answer
- What this library is
- Eleven evidence-based guides to the eye problems people search for most, from screen fatigue to amblyopia.
- What it is not
- A diagnosis. Symptoms that are new, painful or one-sided need clinical assessment.
- Most common complaint
- Tired, dry, irritated eyes after screen work — usually tear film and focus fatigue, not damage.
- Most common serious condition
- Glaucoma, because it is silent until advanced; screening matters more than symptoms.
- Best-evidence prevention
- Blood-sugar control, smoking cessation, UV protection, screening, and treated sleep apnoea.
- Supplements
- Nutrition supports eye health, but no pill substitutes for screening or corrects refractive error.
Eye health content online tends either to terrify people with lists of diseases or to sell them something. We wanted neither. This library explains what each common eye problem actually is, what causes it, what genuinely helps, and when a symptom stops being a lifestyle annoyance and becomes a reason to be seen the same day.
Every article is written against the same evidentiary standard we apply to product research: separate what is established from what is preliminary, distinguish treatment from support, and be explicit about the limits of nutrition in a field where surgery, lenses and medication do most of the work.
Start with your symptom
Most people arrive with a symptom rather than a diagnosis, so the library is ordered that way. Tired eyes and blurry vision sit near the top because they are common and usually benign; a vision deficiency present since childhood, or blindness and vision impairment from progressive disease, sits further down, where the stakes are higher and self-management stops being the answer.
- Tired eyes after screen workComputer vision syndrome: causes, the 20-20-20 rule, and what actually reduces strain.
- Dry, itchy, red or irritated eyesDry eye disease, allergy, blepharitis, and the difference between them.
- Blurry vision or double visionWhy these two symptoms point in very different directions, and when each is urgent.
- Gradual vision loss, or "my eyes are getting worse"The risk factors you can change, and the screening intervals that catch problems early.
Named conditions
- Common eye diseasesCataract, glaucoma, AMD, diabetic retinopathy: what each does and how it is found.
- Amblyopia (lazy eye)Why the treatment window matters, and what still works later.
- Can you stop wearing glasses?Refractive error, correction options, and why no supplement changes a prescription.
Everyday eye health
- How to keep your eyes healthyA routine built on what the evidence supports, not what is easiest to sell.
- How to improve vision naturallyWhat genuinely helps, what is harmless, and what wastes money.
- Nutrition for eye healthThe nutrients with real evidence, and where supplements add value.
- The "Greek morning ritual" claimFact-checking the most common hook in the vision-supplement market.
Where supplements fit
Supplements have a narrow, real role in eye health — narrower than the market implies. The strongest evidence concerns specific nutrients in specific populations, most famously the AREDS2 formulation for people with intermediate age-related macular degeneration. It does not extend to "improving eyesight" in healthy adults, and it certainly does not extend to reversing a prescription.
Two things supplements cannot do: correct refractive error, and treat glaucoma, cataract or diabetic retinopathy. If a product promises either, that tells you what you need to know about the product.
| Goal | What the evidence supports | What it does not |
|---|---|---|
| Slow progression of intermediate AMD | AREDS2-type antioxidant plus lutein/zeaxanthin formula | Restoring lost vision, or helping people without AMD |
| Reduce dry-eye symptoms | Omega-3 in some people, lubricant drops, lid hygiene | Curing aqueous-deficient dry eye |
| General retinal nutrition | A diet rich in leafy greens, colourful vegetables and oily fish | A daily pill replacing a poor diet |
| Correct short or long sightedness | Nothing nutritional | Any supplement, ever |
| Lower intraocular pressure | Prescription drops, laser, surgery | Any over-the-counter product |
For readers researching a specific product, our EyeFortin ingredient analysis applies the same standard ingredient by ingredient, and the full review explains where the marketing outruns the evidence.
When to seek care urgently
Six symptoms that should not wait for a routine appointment.
- Sudden loss or blurring of vision in one eye
- A curtain or shadow across part of the visual field
- A sudden shower of floaters, especially with flashes of light
- Eye pain with redness and reduced vision
- Sudden double vision, or vision loss with weakness or speech difficulty
- New distortion where straight lines look bent
Each of those maps to a condition where hours matter. None is a supplement question, and none should be researched for a week first.
References
- GBD 2019 Blindness and Vision Impairment Collaborators. Trends in prevalence of blindness and distance and near vision impairment over 30 years. The Lancet Global Health. 2021;9(2):e130–e143. Source
- Stapleton F, Alves M, Bunya VY, et al. TFOS DEWS II epidemiology report. The Ocular Surface. 2017;15(3):334–365. Source
- Rosenfield M. Computer vision syndrome: a review of ocular causes and potential treatments. Ophthalmic and Physiological Optics. 2011;31(5):502–515. Source
- Morgan IG, Ohno-Matsui K, Saw SM. Myopia. The Lancet. 2012;379(9827):1739–1748. Source
- Holmes JM, Lazar EL, Melia BM, et al. Effect of age on response to amblyopia treatment in children. Archives of Ophthalmology. 2011;129(11):1451–1457. Source
- Age-Related Eye Disease Study Research Group. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E, beta carotene, and zinc for age-related macular degeneration and vision loss: AREDS report no. 8. Archives of Ophthalmology. 2001;119(10):1417–1436. Source
- Age-Related Eye Disease Study 2 Research Group. Lutein + zeaxanthin and omega-3 fatty acids for age-related macular degeneration: the Age-Related Eye Disease Study 2 randomized clinical trial. JAMA. 2013;309(19):2005–2015. Source
- National Eye Institute. Glaucoma. Source
- National Eye Institute. Cataracts. Source
- National Eye Institute. Diabetic retinopathy. Source
- National Eye Institute. Age-related macular degeneration (AMD). Source
- National Eye Institute. Amblyopia (lazy eye). Source
- National Eye Institute. Refractive errors. Source
- American Optometric Association. Computer vision syndrome. Source
- National Eye Institute. Dry eye. Source
Links open in a new tab. Citations are provided for ingredient and background research only. No published trial has tested the finished EyeFortin formula.