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VISION SCIENCE

How 420nm Blue-Light Filtration Prevents Digital Retinal Fatigue

Published Aug 24, 2026 by Optica Clinical Directorate
Blue-Light Filtration Science — Optica Eyewear

High-Energy Visible (HEV) blue light vibrating between 400nm and 450nm scatters rapidly inside the ocular vitreous, causing ocular ciliary muscle spasm and suppressing melatonin synthesis.