Therapeutic-grade lenses engineered to filter the specific light wavelengths most commonly linked to migraines, photophobia, and light-triggered headaches.
Photophobia Relief
Migraine Support
Post-Concussion
Digital Eye Strain
Indoor & Outdoor
What are FL-41 lenses? FL-41 is a specialized tint applied to lenses, scientifically proven to block specific wavelengths of light that trigger eye pain, dizziness, and headaches. These lenses are widely used as a therapeutic tool for people managing photophobia, post-concussion syndrome, and migraine relief.
The Science
Why FL-41 Works
Blue-Green Light Blocking These lenses filter out a significant portion of blue and green light — specifically in the 480–520 nm range — which are the most common wavelengths to trigger light sensitivity, eye pain, and headaches.
Soothes Fluorescent & Screen Glare Originally developed by researchers to mitigate the harsh, flickering glare of fluorescent lights in office settings and from computer screens — some of the most persistent everyday triggers for photosensitive individuals.
Reduces Symptom Frequency Clinical studies have shown that FL-41 filters can significantly reduce the frequency and severity of migraines in people who experience light-triggered episodes.
380 nm500 nm700 nm
▲ Targeted filtering zone: 480–520 nm
Clinical Evidence
What Studies Have Found
Clinical studies examining FL-41 filters have reported meaningful improvements in migraine frequency and light-triggered discomfort for photosensitive individuals.
74%
fewer migraine attacks reported in studies
76%
improvement in light-triggered discomfort
80%+
reduced overall headache impact reported
Results vary by individual. These figures are based on observational clinical studies involving FL-41 lens filters.
Who It's For
Conditions It May Help With
Chronic Migraines May help reduce discomfort from light-triggered migraine episodes during everyday activities.
Photophobia (Light Sensitivity) Designed to ease persistent sensitivity to bright or artificial light sources.
Post-Concussion Syndrome Widely used as supportive eyewear for those experiencing light sensitivity following a concussion.
Digital Eye Strain Helps reduce discomfort from prolonged screen exposure, LED lighting, and fluorescent environments.
Everyday Use
When to Wear Them
Designed for all-day comfort — suitable for both indoor and outdoor environments.
During screen time & computer use
Under fluorescent & LED lighting
In bright sunlight & outdoor glare
In offices & indoor workspaces
Independently Certified
Internationally Tested & Certified
Every lens is independently tested. These lenses have passed all major international eyewear safety standards.
EN ISO 12312-1:2022
European International Eye Protector Standard
CERTIFIED
ANSI Z80.3:2018
American National Standard for Nonprescription Eyewear
CERTIFIED
AS/NZS 1067.1:2016
Australian & New Zealand Sun Protective Eyewear Standard
CERTIFIED
Product Details
Specifications
Lens tint
Red FL-41 therapeutic tint
Filter zone
Blue-green light band (480–520 nm)
Frame
Unisex, ultra-lightweight
Suitable for
Indoor & outdoor, daytime use
Tint note
Shade may vary slightly from product images due to lighting and production variation
Block the Trigger. Feel the Relief.
Unlike ordinary blue-light glasses, FL-41 lenses are a clinically recognised therapeutic tint — engineered to selectively filter the wavelengths that matter most for migraine and light-sensitivity sufferers.
Dispatch within 5 working days from order date.
4500000+ Sunglass Sold
Free shipping on orders over Rs.1800
8 Months Warranty
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I am highly satisfied with this product, particularly impressed by its visual quality and the overall experience it provides. Initially, I anticipated using it primarily for nocturnal driving or similar activities. However, I discovered its suitability for daytime use as well. Despite the yellow tint, its UV protection effectively transforms it into a functional sunglass, even under bright sunlight. This versatility makes it a multi-purpose accessory, eliminating the need to alternate between separate pairs of glasses—a dark-lensed one for daytime and another for night driving. This product truly offers an all-in-one solution, and I express my sincere appreciation and gratitude for it.
The quality with this affordable price is splendid and it suits in every face. I tried at night while driving and it works like magic there is no dazzling of eyes due to lights. You can wear it in day as well. Absolute genuine, authentic and great product.
Quality of glass is good. Glass is effective in stopping glares from oncoming vehicles. However, at close range I found difficulty in figuring out the proximity of vehicles. The frame looks bigger on my face. I would have liked more if it had a smaller size available as well.
