{"product_id":"fl-41-blue-light-blocking-glasses-for-photophobia-and-migraines","title":"Seren — FL-41 Tinted Glasses","description":"\u003cstyle\u003e.solace{max-width:1120px;margin:auto;padding:40px 24px;color:#173d34;line-height:1.7}.solace h2{font-size:clamp(26px,3vw,40px);line-height:1.16;margin:0 0 20px}.solace h3{font-size:23px;line-height:1.3;margin-top:0}.solace p{margin:0 0 18px}.solace a{color:#174d3a;text-decoration:underline}.solace .sl-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin:48px 0}.solace img{width:100%;height:auto;display:block;border-radius:3px}.solace .sl-card{background:#f4f1e9;padding:30px}.solace .sl-kicker{font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:600}.solace .sl-note{font-size:14px;line-height:1.55;color:#4d6258}.solace section{margin:56px 0}.solace details{padding:19px 0;border-top:1px solid #d6dfd7}.solace summary{cursor:pointer;font-weight:600;font-size:18px}.solace details p{margin:16px 0 0}.solace .sl-button{display:inline-block;background:#0b2b26;color:#fff!important;padding:14px 25px;text-decoration:none;border-radius:2px}.solace .sl-stat{font-size:32px;font-weight:600;margin-bottom:8px}.solace ul{padding-left:24px}.solace .sl-cta{background:#eef2ec;padding:32px}.solace figcaption{font-size:13px;line-height:1.5;margin-top:10px;color:#53645c}.solace .sl-path{display:flex;gap:10px;flex-wrap:wrap;margin:25px 0}.solace .sl-path span{padding:12px;background:#f0f3ee;border-radius:3px}.solace table{width:100%;border-collapse:collapse}.solace td,.solace th{text-align:left;padding:12px;border-bottom:1px solid #d6dfd7}.solace figure{margin:0}@media(max-width:749px){.solace{padding:28px 20px}.solace .sl-grid{grid-template-columns:1fr;gap:24px;margin:32px 0}.solace section{margin:38px 0}.solace .sl-card,.solace .sl-cta{padding:24px}.solace h3{font-size:21px}}\u003c\/style\u003e\u003cdiv class=\"solace\"\u003e\n\u003cdiv class=\"sl-grid\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"sl-kicker\"\u003eSeren · FL-41\u003c\/p\u003e\n\u003ch2\u003eFL-41 migraine glasses \u0026amp; photophobia glasses\u003c\/h2\u003e\n\u003cp\u003eThe office lights. A bright screen. A room that feels harder to sit in than it should. With migraine, light sensitivity can get in the way of simple things.\u003c\/p\u003e\n\u003cp\u003eSeren is our specialist FL-41-tinted eyewear for people exploring migraine glasses and photophobia glasses. Photophobia means light sensitivity: everyday light can feel too bright or uncomfortable.\u003c\/p\u003e\n\u003cp\u003eThe rose-tinted lenses filter the light that reaches your eyes. FL-41 has been studied for migraine-related light sensitivity and may ease light discomfort for some people.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"..\/pages\/migraine-glasses-vs-blue-light-glasses\"\u003eRead our guide to FL-41 and migraine\u003c\/a\u003e · \u003ca href=\"..\/pages\/five-things-fl41-migraine-light-sensitivity\"\u003eRead the five-point guide\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0967\/2428\/7827\/files\/632535d9-c210-4ad8-91ad-9d7cb68a20bf.jpg?v=1793896094\" width=\"1080\" height=\"1080\" loading=\"lazy\" alt=\"Seren black frame with FL-41-tinted lenses, original supplier photograph\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003csection\u003e\u003ch2\u003eWhy a tint can matter\u003c\/h2\u003e\n\u003cp\u003eThe eye does more than help us see. Light also sends signals to parts of the brain that affect how we feel. In migraine, light can feel far too strong. This is called \u003cstrong\u003ephotophobia\u003c\/strong\u003e. It means light sensitivity.\u003c\/p\u003e\n\u003cdiv class=\"sl-path\" aria-label=\"Simplified light filtering explanation\"\u003e\n\u003cspan\u003eLight around you\u003c\/span\u003e\u003cspan\u003e→ FL-41 tinted lens\u003c\/span\u003e\u003cspan\u003e→ A changed mix of light reaches the eye\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003eFL-41 changes the light that passes through the lens. Researchers have studied this tint for light discomfort. The aim is to make bright settings easier to manage for some people.\u003c\/p\u003e\n\u003cp\u003eOne light-sensing system in the eye uses a pigment called melanopsin. Its response is strongest near 480 nm. That helps explain why researchers study light colour. It does not mean every FL-41 lens has one fixed blocking band.\u003c\/p\u003e\n\u003cp class=\"sl-note\"\u003e\u003ca href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC10939838\/\"\u003eRead the optical and light-pathway research\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e\u003cfigure style=\"margin:32px 0\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0967\/2428\/7827\/files\/solace-fl41-lens-explainer.png?v=1793897161\" alt=\"Arrow pointing to the FL-41 lens, explaining selected light filtering and research on light sensitivity\" width=\"1254\" height=\"1254\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003csection\u003e\u003ch2\u003eThe pair at a glance\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eLens\u003c\/th\u003e\n\u003ctd\u003eFL-41 tint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrame\u003c\/th\u003e\n\u003ctd\u003eBlack geometric style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWho it is for\u003c\/th\u003e\n\u003ctd\u003eAdults · Unisex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded\u003c\/th\u003e\n\u003ctd\u003eOne pair of glasses\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/section\u003e\u003csection\u003e\u003ch2\u003eWhat has FL-41 research found?\u003c\/h2\u003e\n\u003cdiv class=\"sl-grid\"\u003e\n\u003cdiv class=\"sl-card\"\u003e\n\u003cp class=\"sl-kicker\"\u003eMigraine research · 1991\u003c\/p\u003e\n\u003cp class=\"sl-stat\"\u003e20 children\u003c\/p\u003e\n\u003ch3\u003eA promising early finding\u003c\/h3\u003e\n\u003cp\u003eA four-month study compared rose and blue tints. In the rose-tint group, average headache frequency fell from 6.2 to 1.6 a month. The blue-tint group did not sustain its early improvement.\u003c\/p\u003e\n\u003cp class=\"sl-note\"\u003eA small study in children. \u003ca href=\"https:\/\/headachejournal.onlinelibrary.wiley.com\/doi\/abs\/10.1111\/j.1526-4610.1991.hed3108533.x\"\u003eRead the study\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-card\"\u003e\n\u003cp class=\"sl-kicker\"\u003eLight-sensitivity research · 2024\u003c\/p\u003e\n\u003cp class=\"sl-stat\"\u003e19 of 25 adults\u003c\/p\u003e\n\u003ch3\u003eLess light discomfort reported\u003c\/h3\u003e\n\u003cp\u003eIn a study of chronic eye pain and photophobia, 19 people reported less light-evoked unpleasantness with FL-41. Two reported no change and four reported more.\u003c\/p\u003e\n\u003cp class=\"sl-note\"\u003eA small case series using another brand’s FL-41 lens. This was not a migraine-prevention trial. \u003ca href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC10939838\/\"\u003eRead the study\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eA separate light-threshold study found that both grey and FL-41 lenses helped, with no clear difference between them. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/16815254\/\"\u003eRead that study\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003cfigure style=\"margin:32px 0\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0967\/2428\/7827\/files\/solace-fl41-at-work.png?v=1793897095\" alt=\"Illustrative adult wearing Seren-style FL-41 glasses while using a laptop\" width=\"1254\" height=\"1254\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003csection\u003e\u003ch2\u003eYour questions, answered\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this for migraine or light sensitivity?\u003c\/summary\u003e\u003cp\u003eSeren is our FL-41-tinted option for people exploring glasses for light sensitivity, including sensitivity linked to migraine.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre these the same as Dante?\u003c\/summary\u003e\u003cp\u003eSeren uses the same frame shape as Dante, with an FL-41 tint. Dante is our amber blue light option. A shared frame shape does not make the two lenses the same filter.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWill colours look different?\u003c\/summary\u003e\u003cp\u003eYes. The visible tint changes the view. Consider this for colour-critical tasks. These glasses have not been verified for driving or as a substitute for certified sunglasses.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhen should I wear them?\u003c\/summary\u003e\u003cp\u003eConsider the settings in which light feels uncomfortable, such as overhead lighting or screens. Ask your optometrist about suitable use if you have migraine, another eye condition or a prescription. Stop using the glasses if they make symptoms worse.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I order Seren with prescription lenses?\u003c\/summary\u003e\u003cp\u003eA prescription version is not currently listed for Seren. If you need prescription lenses or a pair to wear over your existing glasses, \u003ca href=\"..\/pages\/contact\"\u003econtact us before ordering\u003c\/a\u003e to check suitability.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat are the measurements?\u003c\/summary\u003e\u003cp\u003eWe have not received confirmed dimensions for this exact product. Please contact us if you need fit details before ordering. Photographs cannot give an exact fit measurement.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat about delivery and returns?\u003c\/summary\u003e\u003cp\u003eEstimated delivery times are shown at checkout before you pay. You have 30 days after delivery to request a return. Sale items are included. Items must be unworn or unused, with tags and original packaging. Proof of purchase and other policy terms apply. This is not a wear trial.\u003c\/p\u003e\u003c\/details\u003e\u003c\/section\u003e\u003cfigure style=\"margin:32px 0\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0967\/2428\/7827\/files\/solace-fl41-desk.png?v=1793896982\" alt=\"Seren-style FL-41 glasses on a desk in natural daylight\" width=\"1254\" height=\"1254\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003csection\u003e\u003ch2\u003eChoose with a clear view.\u003c\/h2\u003e\n\u003cp\u003eSee the original product photo and gallery above. Check the tint, frame and order details. If you are looking into FL-41 for light sensitivity, Seren is the dedicated option in our range.\u003c\/p\u003e\n\u003ca class=\"sl-button\" href=\"#MainContent\"\u003eBack to the product\u003c\/a\u003e\u003c\/section\u003e\u003cp class=\"sl-note\"\u003eFor new, severe or changing headaches or light sensitivity, get medical advice. \u003ca href=\"https:\/\/www.nhs.uk\/conditions\/migraine\/\"\u003eNHS migraine information\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Heritage Gaze London","offers":[{"title":"Black \/ FL-41","offer_id":55755602854227,"sku":"CJCF285120501AZ","price":85.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/2428\/7827\/files\/632535d9-c210-4ad8-91ad-9d7cb68a20bf.jpg?v=1793896094","url":"https:\/\/heritagegaze.com\/en-eu\/products\/fl-41-blue-light-blocking-glasses-for-photophobia-and-migraines","provider":"Heritage Gaze London","version":"1.0","type":"link"}