¹After 7 days trial per lens, 86% of wearers chose to keep Transitions® GEN S™ grey, 5% of wearers chose to keep Transitions® Signature® GEN 8™ grey, 9% of wearers chose to keep the premium clear lenses. 134 prescription lens wearers trialled 1.67 index lenses with a premium anti-reflective coating. Wearers Test conducted by an external market research agency in the U.S., Q1 2023.
²135 prescription lens wearers trialled Transitions® GEN S™ grey 1.67 index lenses with a premium anti-reflective coating. Photochromic performance may vary across colour and lens material. Wearers Test conducted by an external market research agency in the U.S., Q1 2023.
³For polycarbonate & CR39 lenses across colours achieving 18% transmission @ 23°C in less than 30 seconds.
⁴For grey polycarbonate & CR39 lenses with premium anti-reflective coating fading back to 70% transmission @ 23°C.
⁵For polycarbonate & CR39 lenses across colours achieving 18% transmission at 23°C.
⁶For polycarbonate & CR39 lenses across colours achieving 18% transmission @ 23°C.
⁷133 prescription lens wearers trialled Transitions® GEN S™ grey 1.67 index lenses with a premium anti-reflective coating. Photochromic performance may vary across colour and lens material. Wearers Test conducted by an external market research agency in the U.S., Q1 2023.
⁸Sources: A – Subject-masked cross-over randomised controlled investigation performed in 2023 at the University of Georgia, on 30 healthy participants (19.2 ±1.3 years). Testing light stress (discomfort and disability glare, photostress recovery) with the clear and darkest states of Grey Transitions GEN S AR coated lenses compared to clear AR-coated control lenses. Principal Investigator Prof Billy R. Hammond. Manuscript ready for submission in Journal of Optometry. Harth JB, Wysocky CJ, Hammond BR, Renzi-Hammond LM, Using New Photochromic Spectacle Lenses to Attenuate Light Stress in Healthy Adults. B – Subject-masked cross-over randomised controlled investigation performed in 2023 at the University of Murcia, on 10 healthy pre-trained participants (29.5 ±4.01 years). Testing contrast sensitivity during fade-back with Grey Transitions GEN S AR-coated lenses compared to Grey Transitions GEN 8 AR-coated lenses. Principal Investigator Prof Pablo Artal. Accepted abstract at ARVO 2024. Duarte-Toledo R, Mompeán J et al., A new photochromic lens improves contrast sensitivity during fade-back. Manuscript in preparation. Disclaimer: 1. Tested on Grey Transitions GEN S 1.6 index lenses with premium AR coating compared to clear 1.6 index lenses with premium AR coating. 2. Tested on Grey Transitions GEN S 1.6 index lenses with premium AR coating compared to Grey Transitions GEN 8 1.6 index lenses with premium AR coating. * Vision quality improved in challenging light conditions, notably in the transition from a bright to a darker environment (source B), in bright to very bright light situations (source A), or in low light with peaky stray light (source B).
⁹Vision quality improved in challenging light conditions, notably in bright to very bright light situations and in low light with peaky stray light (when Transitions® GEN S™ are compared to clear lenses). Subject-masked cross-over randomised controlled investigation performed in 2023 on 30 healthy participants (19.2 ± 1.3 years). Testing light stress (discomfort and disability glare, photostress recovery) with the clear and darkest states of Grey Transitions® GEN S™ 1.6 index lenses with a premium anti-reflective coating compared to clear 1.6 index lenses with a premium anti-reflective coating. Principal Investigator Prof Billy R. Hammond.
¹⁰For polycarbonate and CR39 lenses across colours. Blue-violet light is between 400 and 455nm (ISO TR 20772:2018)
¹¹133 prescription lens wearers trialled Transitions® GEN S™ grey 1.67 index lenses with a premium anti-reflective coating. Photochromic performance may vary across colour and lens material. Wearers Test conducted by an external market research agency in the U.S., Q1 2023.
* Transitions® GEN S™ is fully clear indoors and darkens in seconds. For polycarbonate & CR39 lenses across colours achieving 18% transmission at 23°C outdoors.