Blue-light glasses are marketed hard to anyone who looks at a screen. The evidence is more modest than the advertising.
Retina ClearWhat the research says
A 2023 Cochrane review of trials on blue-light filtering lenses found that they probably make little or no difference to eye strain after screen work, and no clear effect on sleep quality. The trials were small and mostly short, so the door is not closed, but there is no strong case.
Retina ClearWhat does help
- Look away every 20 minutes at something distant.
- Blink fully, since staring cuts blink rate.
- Keep the screen slightly below eye level and glare-free.
- Get your prescription checked; uncorrected sight is a common cause.
Where a capsule fits: nothing on a supplement shelf replaces those habits. If a product promises to fix eye strain alone, be sceptical.