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Blue-light-filtering glasses appear to do little or nothing for eye strain in the short term, according to a 2023 Cochrane review of 17 trials. Evidence on sleep was too uncertain for a firm conclusion, and none of the trials tested protection against damage to the retina.

Singh et al., Cochrane Systematic Review, 2023

HealthScience

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A Cochrane review pools the results of many clinical trials under strict, published rules, and is widely treated as one of the most reliable kinds of medical evidence; Cochrane itself is an international network of researchers. This review combined 17 trials with 619 participants in six countries, but the trials were small and short, lasting from less than a day to five weeks. For eye strain, the tired, dry or aching eyes that come with long screen use, the authors rated the evidence as low certainty; on sleep, the trials disagreed and certainty was very low. They called for larger, longer trials.

Türkçe oku
Mavi ışık filtreli gözlükler, 2023'te 17 denemeyi inceleyen bir Cochrane derlemesine göre kısa vadede göz yorgunluğunu ya çok az azaltıyor ya da hiç azaltmıyor. Uyku üzerindeki etkilerine dair kanıtlar kesin bir şey söylemeye yetmiyordu; denemelerin hiçbiri de gözlüklerin retinayı hasara karşı koruyup korumadığını sınamamıştı.

Cochrane derlemesi, çok sayıda klinik denemenin sonuçlarını önceden yayımlanmış sıkı kurallara göre bir araya getirir ve tıpta en güvenilir kanıt türlerinden biri sayılır; Cochrane, dünyanın dört bir yanından araştırmacıların oluşturduğu bir ağdır. Bu derleme altı ülkede yapılmış, toplam 619 katılımcılı 17 denemeyi kapsıyordu; ama denemeler küçüktü ve bir günden kısa ile beş hafta arasında sürmüştü. Uzun ekran kullanımından gelen yorgun, kuru ya da ağrıyan gözler konusunda yazarlar kanıtın kesinliğini düşük buldu; uykuda ise denemelerin sonuçları birbirini tutmuyordu ve kesinlik çok düşüktü. Yazarlar daha büyük ve daha uzun denemeler yapılması çağrısında bulundu.

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