The effects of two longpass filters on visual performance
| Autor: | Chiara Airoldi, Chiara Rosa Giuseppina Braga, Natalia Vlasak, Silvia Tavazzi, Silvano Larcher, Federica Cozza, Matteo Monzio Compagnoni, Fabrizio Zeri, Gabriele Nigrotti |
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| Přispěvatelé: | Cozza, F, Monzio Compagnoni, M, Airoldi, C, Braga, C, Nigrotti, G, Vlasak, N, Larcher, S, Zeri, F, Tavazzi, S |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Adult
Male medicine.medical_specialty Original article Optics and Photonics Longpa Visual acuity genetic structures Mesopic vision media_common.quotation_subject Longpass Mesopic Vision Optical transmittance Glare 03 medical and health sciences 0302 clinical medicine Macular pigment Ophthalmology medicine Contrast (vision) Cutoff Humans Contrast sensitivity Agudeza visual contrast sensitivity glare longpass macular pigment visual acuity media_common Mathematics Aged Glare (vision) Light attenuation Deslumbramiento Middle Aged eye diseases Eyeglasses 030221 ophthalmology & optometry Pigmento macular Female sense organs medicine.symptom Sensibilidad de contraste 030217 neurology & neurosurgery Filtration Optometry Photopic vision |
| Zdroj: | Journal of Optometry |
| Popis: | Purpose: This study compared visual performance and optical properties of three filters. Method: Two groups of twenty adults were recruited: wearers of progressive addition lenses (PAL, 46–73 years) and wearers of single vision lenses (SVL, 26–55 years). Three spectacle filters (Hoya, Japan) were compared: clear control, Standard Drive (STD), and Professional Drive (PRO) lenses. Optical transmittance was measured by a Jasco V-650 spectrophotometer. Best corrected visual acuity (BCVA) was measured in photopic (BCVAphotopic) and mesopic (BCVAmesopic) conditions and under glare (BCVAglare). Photopic contrast sensitivity (CS) was also measured. Results: The three longpass filters show cutoff at 426 ± 2 nm (STD/PRO) and 405 ± 2 nm (clear lens). BCVAglare improved with Drive filters compared to the clear one (p < 0.05) from 0.03 to -0.02 (STD) and to -0.01 (PRO) for PAL and from -0.08 to -0.12 (STD and PRO) for SVL. For PAL, BCVAmesopic improved from 0.15 to 0.12 (STD, p < 0.05) and 0.13 (PRO), while no substantial difference was observed for SVL. CS showed some improvements with Drive lenses at some angular frequencies between 6 and 18 cycles/deg, mainly for the PAL group. No BCVAphotopic differences were found. After testing all filters, each for two weeks, 79% (PAL) and 60% (SVL) of participants preferred Drive lenses. Conclusions: Drive lenses are found to maintain or improve some visual functions compared to the clear lens. The improvement of mesopic visual acuity, visual acuity under glare, and contrast sensitivity is mainly attributed to the reduction of intraocular light scattering as a consequence of the total light attenuation in the spectral range below the cutoff. |
| Databáze: | OpenAIRE |
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