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How Vision Works: A Journey Inside Your Eyes
Discover the incredible human eye vision process — a journey that transforms light into sight within milliseconds. From the cornea and lens that focus incoming light, to the retina and optic nerve that convert it into signals your brain understands, every blink reveals one of the body’s most sophisticated biological systems. Learn how your eyes capture color, depth, and motion, and why regular eye exams are essential to protect against conditions like glaucoma, macular degene

Keshav Narain, M.D.
Nov 1, 20253 min read


Overstimulated and Overtired: Why Your Brain Can’t Shut Off at Night
Ever crawl into bed exhausted, only to find your mind still racing after scrolling or binge-watching? According to Dr. Keshav Narain of South Bay Retina, it’s not just blue light—digital content itself overstimulates the brain, keeping stress hormones and reward pathways active when you should be winding down. This disrupts sleep quality, fuels eye strain, and leaves you overtired. Simple habits like digital curfews and bedtime rituals can help your brain reset for rest.

Keshav Narain, M.D.
Sep 26, 20253 min read
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