{"product_id":"shinu-fl-41-migraine-men-glasses-filter-blue-green-light-480-520nm-photophobia-relief-reduce-eye-strain-metal-frame","title":"SHINU FL-41 Migraine Men Glasses Filter Blue Green Light 480-520nm Photophobia Relief Reduce Eye Strain Metal Frame","description":"\u003cp class=\"word-break white-space mt-10\" style=\"text-align:left;color:#434649;font-size:13px;font-weight:normal;\"\u003eSHINU FL-41 photochromic migraine glasses come with auto-tint changing lenses.\u003cbr\u003e The lens remains soft rose indoors and turns deep purple under sunlight.\u003cbr\u003e It blocks 72% of 480-520nm blue-green light to ease photophobia eye strain and migraine triggers.\u003cbr\u003e Slim lightweight metal frame delivers stable all-day comfort.Modern rectangular business style ideal for office commute and daily use.\u003cbr\u003e One pair adapts to different lighting conditions for men with light sensitivity.\u003c\/p\u003e \n\u003cp class=\"word-break white-space mt-10\" style=\"text-align:left;color:#434649;font-size:13px;font-weight:normal;\"\u003e1. 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 How FL41 Lenses Work\u003cbr\u003e Originally made for office eye fatigue relief.\u003cbr\u003e FL41 rose lenses block irritating 480–520nm cyan-green light and cut glare from screens, lamps and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=\"img239\" 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=\"img240\" height=\"800\" referrerpolicy=\"no-referrer\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S3446faba56004c76a1510cd188237046S.jpg\" style=\"width: 100%; height: auto; vertical-align: middle;\" width=\"800\"\u003e\n\u003cimg cke-id=\"img241\" height=\"800\" referrerpolicy=\"no-referrer\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S07690f43081c4486879530b21f9eaeeek.jpg\" style=\"width: 100%; 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