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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