{"product_id":"shinu-fl-41-migraine-glasses-light-pink-lens-reduce-photophobia-blue-light-filter-480-520nm-73-transmittance-metal-frame-for-men","title":"SHINU FL-41 Migraine Glasses Light Pink Lens Reduce Photophobia Blue Light Filter 480-520nm 73%Transmittance Metal Frame For Men","description":"\u003cp class=\"word-break white-space mt-10\" style=\"text-align:left;color:#434649;font-size:13px;font-weight:normal;\"\u003erred.FL‑41 lenses come in different tint depths for different user needs. For people with mild light sensitivity and high sensitivity to color distortion, lighter‑tint lenses are strongly prefe\u003cbr\u003e Our SHINU FL41B lens is specially engineered for indoor‑only usage. It delivers 40% targeted blocking rate against problematic wavelengths, paired with 73% light transmittance. It provides effective relief from light‑triggered discomfort while minimizing color shift. Ideal for mild‑level photophobia, migraine‑related light sensitivity, long‑hour screen time and indoor fluorescent \/ LED lighting environments.\u003cbr\u003e 1. Why 480–520nm Light Irritates Eyes\u003cbr\u003e Human eyes have rods (night vision) and cones (color \u0026amp; detail).\u003cbr\u003e In early 2000s, scientists found ipRGCs, a third light-sensing cell. It carries melanopsin, highly sensitive\u003cbr\u003e to 480–520nm cyan-green light. Too much light in this band triggers glare and eye discomfort from LEDs,\u003cbr\u003e fluorescent lights and sunlight.\u003cbr\u003e 2. Where FL41 Comes From\u003cbr\u003e FL41 stands for Fluorescent Light Formula 41, created in late 1980s by Professor Arnold Wilkins in Birmingham,\u003cbr\u003e UK. Old office fluorescent lights flicker invisibly with strong 480–520nm spectrum, causing eye strain for\u003cbr\u003e workers. After many trials, his 41st rose-tint lens formula perfectly filters harsh fluorescent light, named FL-41.\u003cbr\u003e 3. How FL41 Lenses Work\u003cbr\u003e Originally made for office eye fatigue relief.\u003cbr\u003e FL41 rose lenses block irritating 480–520nm cyan-green light and cut glare from screens, lamps and sun.\u003cbr\u003e Different from dark sunglasses, it stays transparent indoors without dim vision, also softens harsh outdoor\u003cbr\u003e light for office, study and daily outdoor use.\u003c\/p\u003e \n\u003cimg cke-id=\"img158\" height=\"800\" referrerpolicy=\"no-referrer\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S2c28f221ff024438a4f8f7e3a3492b962.jpg\" style=\"width: 100%; height: auto; vertical-align: middle;\" width=\"800\"\u003e \n\u003cimg cke-id=\"img159\" height=\"2000\" referrerpolicy=\"no-referrer\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S6c7f76a26b4c4a2c850073f241d832131.jpg\" style=\"width: 100%; height: auto; vertical-align: middle;\" width=\"2000\"\u003e \n\u003cimg cke-id=\"img160\" height=\"1200\" referrerpolicy=\"no-referrer\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sa2a139ea2f1447ef96e840a4b12e8eb2U.jpg?width=1200\u0026amp;height=1200\u0026amp;hash=2400\" style=\"width: 100%; 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