Yellow and red filters: what scientific evidence really shows

Yellow and Red Filters: What Does Science Really Say?

Light-filter glasses are widely promoted, but scientific evidence is cautious.

Scientific evidence

No clinically relevant benefits have been proven in healthy individuals.

Red or amber filters for sleep

There is a physiological basis, but evidence is limited and inconsistent.

Yellow filters

They may help in retinal diseases but not in healthy eyes.

Medical advice

Routine use is not supported. Sleep hygiene remains more effective.