FL-41 is a lens tint that has been shown to reduce the impact of migraine attacks in clinical studies. But what does FL-41 tint look like? Are all FL-41 glasses the same? The short answer is no.
An early research project from the University of Utah Medical Center evaluated whether patients were getting the same benefit from therapeutic lenses (or lenses with FL-41 tint) from different vendors. Surprisingly, the study found wide variations in the quality, lens color, spectral characteristics, and optical densities of lenses purchased from different optical shops and laboratories.
Each line on the graph below represents FL-41 lenses from 5 different vendors. The light shows how much light passes through the lens at different light wavelengths. As you can see, they vary significantly. Even the color of the lens ranges from rust. to purple, to hot pink.
How are Axon lenses different?
This graph shows the level of variation when using generic FL-41 tint. Axon Optics brand name SpectraShield FL-41™ is clinically proven to be more effective and more consistent than the generic. Here are some of the other differences you’ll see when you take a closer look:
- Lens Technology: Our indoor lens is a soothing rose color, and the outdoor lens is similar to sunglasses. Other companies that came later offer a generic version that attempts to imitate, but fails to replicate, our product. Most others are an orange/rust color.
- Lens Options: Axon is the only company to offer Transition lenses and contact lenses for migraine and light sensitivity.
- Advanced Coatings: Only Axon Optics includes advanced optical coatings for anti-glare, anti-smudge, anti-scratch with every non-prescription lens order. This is a $60 value.
- Packaging: Every frame comes with a case and cleaning cloth bag.
How should I choose a therapeutic lens?
Look at the research and consider the source. Axon Optics was founded by researchers at the University of Utah. One of the founders, Dr. Bradley Katz, is a neuro-ophthalmologist who has worked with thousands of patients. He has been recommending and perfecting therapeutic eyeglasses for patients with light sensitivity for over 15 years.
The Axon lenses, called Spectrashield FL-41™, have been used by tens of thousands of people and have been shown to reduce the impact of migraine in over 90% of users. Our Spectrashield FL-41™lens is proprietary, and has been fine-tuned over the last 20 years many years by Dr. Katz.Each lens comes with premium coatings that block glare and prevent finger smudges and scratches.
Here is some feedback from an optical shop that is recommending Axon Eyewear: “I did a quick in-office test of [various vendors of FL-41]. Your tint won, especially with the office people who suffer from migraine headaches.”
Try Spectrashield FL-41™ Lenses
Don’t choose generic lenses. Not all FL-41 lenses are created equal. Get the trusted name in therapeutic eyewear. Check out our stylish frames now at our shop.