{"product_id":"shinu-fl-41-light-pink-tinted-glasses-480-520mm-blue-light-blocking-eye-comfort-migraine-relief-for-light-sensitivity-uv400","title":"SHINU FL-41 Light Pink Tinted Glasses,480-520mm Blue Light Blocking, Eye Comfort \u0026 Migraine Relief for Light Sensitivity UV400","description":"\u003cp class=\"word-break white-space mt-10\" style=\"font-size:13px;font-weight:normal;text-align:left;color:rgb(67, 70, 73)\" align=\"left\"\u003eFL‑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 preferred.\u003cbr\u003e\nOur 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\n1. Why 480–520nm Light Irritates Eyes\u003cbr\u003e\nHuman eyes have rods (night vision) and cones (color \u0026amp; detail).\u003cbr\u003e\nIn early 2000s, scientists found ipRGCs, a third light-sensing cell. It carries melanopsin, highly sensitive\u003cbr\u003e\nto 480–520nm cyan-green light. Too much light in this band triggers glare and eye discomfort from LEDs,\u003cbr\u003e\nfluorescent lights and sunlight.\u003cbr\u003e\n2. Where FL41 Comes From\u003cbr\u003e\nFL41 stands for Fluorescent Light Formula 41, created in late 1980s by Professor Arnold Wilkins in Birmingham,\u003cbr\u003e\nUK. Old office fluorescent lights flicker invisibly with strong 480–520nm spectrum, causing eye strain for\u003cbr\u003e\nworkers. After many trials, his 41st rose-tint lens formula perfectly filters harsh fluorescent light, named FL-41.\u003cbr\u003e\n3. How FL41 Lenses Work\u003cbr\u003e\nOriginally made for office eye fatigue relief.\u003cbr\u003e\nFL41 rose lenses block irritating 480–520nm cyan-green light and cut glare from screens, lamps and sun.\u003cbr\u003e\nDifferent from dark sunglasses, it stays transparent indoors without dim vision, also softens harsh outdoor\u003cbr\u003e\nlight for office, study and daily outdoor use.\u003c\/p\u003e\n\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cimg cke-id=\"img98\" referrerpolicy=\"no-referrer\" slate-data-type=\"image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sbbe5bd5046ba4107a011036f02a3a6b7t.jpg\" style=\"width:100%;height:auto\" width=\"100%\" height=\"auto\"\u003e\u003c\/div\u003e \u003cdiv\u003e\u003cimg cke-id=\"img99\" referrerpolicy=\"no-referrer\" slate-data-type=\"image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S4b6554e5799044e384e2d39b1c39270ez.jpg\" style=\"width:100%;height:auto\" width=\"100%\" height=\"auto\"\u003e\u003c\/div\u003e 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