Digital eye strain (computer vision syndrome)
A symptom complex with prolonged digital screen use: eye fatigue, dryness, blurred vision, headache. Standard approaches: 20-20-20 rule, lubricating drops, optimised lighting and screen distance. Pharmacological therapy lacks evidence beyond refractive correction and dry eye management.
ICD-10 H53.13 drugs
Also known as: Digital eye strain, Computer vision syndrome
Marketing claims without evidence base
The drug is promoted for these uses outside international guidelines. Each entry below is analyzed against AEMPS, FDA, EMA, Cochrane and major RCTs.
- DAstaxanthinNot recommended · Dietary supplements, carotenoids (local classification)Astaxanthin is heavily marketed for computer eye strain. The marketing rests on a handful of early-2000s Japanese RCTs (Kajita et al.) with small samples of 20–50 participants, sponsored by AstaReal/Fuji Health Science. The claimed effect: improved accommodation amplitude and lower «fatigue» complaints. The 2022 meta-analysis by Ma in Nutrients pooled 11 RCTs (521 participants) and found a statistically significant but clinically small improvement in eye-strain symptoms; evidence quality is low, heterogeneity high, risk of bias high due to industry sponsorship. No Cochrane review exists. AAO PPP 2023 on dry eye and digital eye strain recommends the 20-20-20 rule, refraction correction, artificial tears and workstation optimisation. Astaxanthin is not in the guideline. If a supplement was prescribed for «tired eyes» without a refraction and tear-film assessment, consider seeking a second opinion.
- DLuteinNot recommended · Xanthophyll carotenoid, supplement marketed for vision and skin supportLutein and zeaxanthin are marketed as protection from screen blue light and a remedy for computer eye strain. Small RCTs (Ma 2009, Stringham 2017) showed modest improvement in contrast sensitivity and reduced glare sensitivity at 10–20 mg/day for 6–12 months. Sample sizes were small, methodology uneven, and no positive systematic review exists. AAO holds that digital eye strain management rests on the 20-20-20 rule, refraction correction, artificial tears for dry eye and workstation optimisation. Lutein is not part of this algorithm. If a supplement was prescribed for «computer eye strain», consider seeking a second opinion; a refraction and tear-film assessment by an ophthalmologist is the reasonable next step.
- DLutein + zeaxanthinNot recommended · Carotenoids. Antioxidants for visionLutein and zeaxanthin are carotenoids that build up in the macula of the retina. They are widely marketed in eye supplements as a remedy for eye strain from computers and phones. The benefit for this use has not been shown: there is no solid evidence that taking them reduces screen-related visual fatigue. For tired eyes, regular breaks, blinking and lubricating drops help, and persistent discomfort is worth a checkup to rule out dry eye and an uncorrected refractive error.
How to read tiers A–F
Evidence tiers belong to the drug-indication pair, not to the drug as a whole: the same substance can be A for one condition and F for another.
- AStrong evidence – first or second line in international guidelines
- BRecommended in selected cases
- CStudy data contradict each other
- DBenefit not proven, no documented harm
- FDocumented harm, or risk without benefit