SHINU | SHINU FL‑41 Migraine Glasses Clip‑on Blue Light Filter Clip On Lenses for Photophobia Light Sensitivity Clip for Eyeglasses

FL‑41 Migraine Relief Clip‑on Lenses for Prescription GlassesDo you suffer from migraine triggered by bright light, fluorescent lighting or long‑time screen viewing? These FL‑41 clip‑on lenses offer practical relief for photophobia and light‑sensitive symptoms. No need to buy extra complete glasses, just clip them over your current eyeglasses.✅ Professional FL‑41 Spectrum Lens Special color‑tinted lenses filter irritating light wavelengths. Help relieve discomforts including migraine triggers, photophobia, eye fatigue and screen‑related eye strain. Note: For symptom relief only, not a medical cure.✅ Convenient Clip‑on & Flip‑up Structure Simple clip‑on installation, fits most regular eyeglass frames. Flip‑up function allows you to lift the lenses when you do not need them. Ultra‑light material will not add extra burden or press on your nose bridge.✅ Wide Application Scenarios Perfect for indoor office work under fluorescent lights, long hours facing computer screens, shopping, driving and other bright outdoor occasions. Suitable for migraine sufferers, light‑sensitive people and digital‑screen heavy users.✅ Easy to Carry & Maintain Compact size for putting into bags. Keep lenses clean with soft lens cloth. Convenient for daily commute, travel and home use. Migraine Relief Glasses – Your Daily Defense Against Light-Triggered Headaches1. Why 480–520nm Light Irritates Eyes Human eyes have rods (night vision) and cones (color & detail).In early 2000s, scientists found ipRGCs, a third light-sensing cell. It carries melanopsin, highly sensitive to 480–520nm cyan-green light. Too much light in this band triggers glare and eye discomfort from LEDs,fluorescent lights and sunlight. 2. Where FL41 Comes From FL41 stands for Fluorescent Light Formula 41, created in late 1980s by Professor Arnold Wilkins in Birmingham,UK. Old office fluorescent lights flicker invisibly with strong 480–520nm spectrum, causing eye strain for workers. After many trials, his 41st rose-tint lens formula perfectly filters harsh fluorescent light, named FL-41. 3. How FL41 Lenses WorkOriginally made for office eye fatigue relief. FL41 rose lenses block irritating 480–520nm cyan-green light and cut glare from screens, lamps and sun.Different from dark sunglasses, it stays rose pink indoors without dim vision, also softens harsh outdoor light for office, study and daily outdoor use. and reduce migraine-related discomfort.Spending time outdoors, our glasses create a comfortable visual environment that helps calm overstimulated eyes vision or color perception. Whether you’re working at a computer, reading under fluorescent lights, driving, or most problematic wavelengths of light—including harsh blue light and bright, glaring rays—without distorting. please check the size before your order. this is very important. two kinds of shapes. please kindly noted that the frame is just for demonstration, it is not included. shape AShape B.