the quality is very good.
Tornado Black | FL-41 Migraine Relief Glasses
Rs. 2,599.00
Regular price
Rs. 4,599.00
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Description
OKNO — Specialized Light Therapy Eyewear
FL-41
Migraine Relief
Glasses
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 nm 500 nm 700 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.
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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Customer Reviews
Overall rating: 5 / 5 from 179463 reviews.
.
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.
These really work, they really helped me fix my sleep cycle. The red tint is comforting and really effective.
Second time buying these glasses they are really durable, first one's paint wore off that's why got another. The fit and design is 🤌🏼🤌🏼
Still good . I a used only 2 days
Best
It is big, not suits my face cut. Maybe smaller size suits.
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.
I got the damage piece and i requested for the new one but still didn't receive please exchange my product with some different model
Frame is good, so is the quality, value for money product however during night drive is extremely helpful. 4/5* . Keep up the quality.
Awesome Experience it was
Just love it, never found such economical and stylish wooden frame sunglasses!!!
Overall sunglass is Good.
Nice
Amazing purchase.. The eyewear is very unique. Best quality. The purchase made me too happy. Best purchase of the season. Thank you OKNO
Ok
It is wonderful glass with strong quality
Good sunglasses for adventure activity
Glass quality not as expected. Glass case is same for every purchase !!
Good
Wow nice one
Fabulous
Excellent lenses. Just one area of improvement, the lenses can be black from inside. Will be easier on the eye
Nice 👌
Very nice and beautiful Sunglasss
Excellent product
Osm glasses
I like the comfort and quality ,, worth for money
awesome shades
awesome
Eye comfort is absolutely amazing
Very light weight and super cool
Overall....... fantastic.... raapchik...
Phenomenal quality, loved the frame.
Best sunglasse🕶️ I have been used till now
Excellent
Loved the product, Thankyou so muchhhhh
Amazing fit.
Comfort fitting, while doing cycling.