Where did FL-41 come from?
FL-41 was developed in the late 1980s/early 1990s by researchers trying to address the negative impacts of fluorescent light on many people.
While their initial published study focused on the lenses' effects on children with migraine, they quickly discovered that the wavelengths it filtered (480-520nm) soothed adults, too.1
30 years later, TheraSpecs is the leading brand of FL-41 glasses and has helped improve the lives of people with migraine and photophobia all over the globe as part of their light management strategies! Unlike other FL-41 glasses, TheraSpecs lenses are measured to verify that they block the right amount of the most problematic wavelengths.
We also offer several FL-41 options, including lenses for night driving and sunlight protection, lenses that provide the strongest defense for artificial lights, and multiple lighter or darker lens strengths to further meet your light management needs. If you are wanting FL-41, we’ve got you covered!
Each of our styles were similarly designed to maximize comfort through lightweight materials and adjustable frames. Browse them today, or send in your own frames to fit with our specialty lenses.