Premier FL-41
Most "FL-41" isn't FL-41. Ours is measured.
Any lab can dye a lens pink and call it FL-41 — and most do. We tested dozens. Different colors, different spectrums, different patient experiences. Premier FL-41 is a pre-dyed lens blank with a calibrated spectral curve, so every pair filters the same wavelengths, every time. Surfaced and finished in our West Valley City, Utah lab.
FL-41 is a light-filtering tint originally developed to reduce eye strain from fluorescent lighting. Since then, researchers have found it useful for patients with broader light sensitivity — photophobia, post-concussion syndrome, blepharospasm, and general discomfort under artificial light.
The problem: "FL-41" isn't a controlled standard. Any lab can call a pink-tinted lens FL-41. University of Utah researchers studied lenses from multiple vendors and found dramatic variation in lens color, spectral characteristics, and light-filtering properties. Hold generic FL-41 lenses from different suppliers up to the light and you'll see it yourself — some are rose, some are rust, some are deep orange, some lean red.
Premier FL-41 is a pre-dyed lens blank — not a tinted clear — meaning every pair transmits the same spectrum, every time. The tint is built into the lens material, not applied after the fact. No batch variation. No dye drift. Same color, same performance, every pair.
"Generic FL-41" is all over the map
We tested dozens of generic FL-41 lenses from labs across the country — different colors, different light-transmission curves, different results in the chair. A sample of what we found is below.
How Premier FL-41 compares
Less color distortion than typical FL-41, and a low-reflection finish that keeps glare out of the patient's eye.
What it blocks — and what it lets through
Wavelengths in the blue and amber range tend to aggravate photophobia. Green wavelengths appear to be better tolerated — and some studies suggest green light may actually reduce light sensitivity symptoms.
Premier FL-41 is calibrated to reduce blue and amber transmission while letting more green through. Your patients get filtration where it matters, without losing the light that may actually help them.
Illustrative — not a measured spectral curve
Who it's for
Premier FL-41 is worth recommending to patients who mention any of the following.
Fluorescent & LED discomfort
Patients who feel worse under office lighting, big-box retail, or modern LED panels.
Post-concussion sensitivity
Light sensitivity following concussion or traumatic brain injury — often persistent and resistant to standard treatments.
Photophobia
Light sensitivity related to dry eye, blepharospasm, or other neurological conditions.
Glare that AR doesn't solve
Patients with general glare sensitivity that doesn't resolve with a standard anti-reflective coating.
A note on darkness
Darker isn't always better. Wearing very dark lenses indoors can increase light sensitivity over time as the eye adapts to reduced light levels. Premier FL-41 is intentionally calibrated to filter the wavelengths that cause problems without cutting overall light transmission more than necessary.
Order it
Add Premier FL-41 to any lens job. Compatible with most lens materials and designs. AR coating can be added — we recommend it, since anti-reflective treatment further reduces the glare most light-sensitive patients are trying to escape.
Questions about whether it's right for a specific patient? Call us. Our lab director has been making these lenses for years.
- Pre-dyed lens blank — no surface tinting
- Consistent spectrum, pair to pair
- Compatible with most materials and designs
- AR coating recommended and available
Talk to the lab
We'll walk you through fit, materials, and whether FL-41 makes sense for the patient in front of you.
Made in West Valley City, Utah