Research on the benefit of a protective shield for 460-480 nm wavelength blue light and its effect on the visual function of healthy adults
Meng Zhaojun*,Zhang Jing,Wang Wei
Beijing Tongren Eye Center, Beijing Tongren Hospital of Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Institute of Ophthalmology, Beijing 100730, China
Objective To investigate the benefit of shielding 460-480 nm wavelength light, its effect on the visual function of healthy adults, and the prospects of light damage protection using optical thin-film technology. Methods This was a self-controlled study. Twenty-four healthy adults were recruited for this study. Under photopic (1 000 lx) and mesopic (40 lx) conditions, the total error score (TES) and partial error score (PES) in the ten color bands of the Farmsworth-Musell 100-Hue test were calculated to detect variations in color perception among a non-intervention group, a group wearing a 460-480 nm blue light-shielded filter and a group wearing ordinary yellow sunglasses (filtering 380-550 nm light). The contrast sensitivities of five spatial frequencies under photopic、mesopic and mesopic glare conditions were also compared. The results were analyzed with a signed-rank test. Results Under photopic and mesopic conditions, the TES and PES for several color bands were significantly higher when either the narrow-band filter group or the sunglass group compared to the non-intervention group (P<0.017). Under photopic and mesopic conditions, the TES and PES for several bands were significantly higher for the sunglass group compared to the narrow-band filter group (P<0.017). Under photopic and mesopic conditions, the contrast sensitivity differences for the groups were not statistically significant. Under the mesopic glare condition, the contrast sensitivities of spatial frequency 6.0 c/d were higher in the narrow-band filter group than in the non-intervention group (P<0.017). Conclusion With optical thin-film technology to shield harmful light, the color perception of healthy adults is affected but contrast sensitivity improves. The technology has a significant advantage compared with ordinary yellow sunglasses. Optical thin-film technology provides better prospects for light damage protection.
孟昭君,张晶,王薇. 窄谱滤光片屏蔽460~480 nm蓝光后正常成年人视功能的变化[J]. 中华眼视光学与视觉科学杂志, 2016, 18(9): 536-541.
Meng Zhaojun*,Zhang Jing,Wang Wei. Research on the benefit of a protective shield for 460-480 nm wavelength blue light and its effect on the visual function of healthy adults. Chinese Journal of Optometry Ophthalmology and Visual science, 2016, 18(9): 536-541. DOI: DOI:10.3760/cma.j.issn.1674-845X.2016.09.006
Sanchez-Ramos C, Vega JA, del Valle ME, et al. Role of metalloproteases in retinal degeneration induced by violet and blue light[J]. Adv Exp Med Biol,2010,664:159-164. DOI:10.1007/978-1-4419-1399-9_19.
[2]
Sunlight + low antioxidant levels increase risk of AMD. Wear sunglasses and hatsand eat antioxidant-rich foods to protect your eyes from age-related macular degeneration[J]. Duke Med Health News,2009,15(2):6-7.
[3]
Roehlecke C, Schumann U, Ader M, et al. Influence of blue light on photoreceptors in a live retinal explant system[J]. Mol Vis,2011,17:876-884.
[4]
De Rui M, Middleton B, Sticca A, et al. Sleep and circadian rhythms in hospitalized patients with decompensated cirrhosis: effect of light therapy[J]. Neurochem Res,2015,40(2):284-292. DOI:10.1007/s11064-014-1414-z.
Jameson D, Hurvich LM. Levels of Adaptation and Brightness Changes During Color Adaptation[J]. Science,1949,110(2847):92-93. DOI:10.1126/scjence.110.2847.92.
[8]
Ginsburg AP. Contrast sensitivity and functional vision[J]. Int Ophthalmol Clin,2003,43(2):5-15.
[9]
Bühren J, Terzi E, Bach M, et al. Measuring contrast sensitivity under different lighting conditions: comparison of three tests[J]. Optom Vis Sci,2006,83(5):290-298. DOI:10.1097/01.opx.0000216 100.93302.2d.
[10]
Vizmanos JG, de la Fuente I, Matesanz BM, et al. Influence of surround illumination on pupil size and contrast sensitivity[J]. Ophthalmic Physiol Opt,2004,24(5):464-468. DOI:10.1111/j.1475-1313.2004.00230.x.
[11]
Montés-Micó R, Charman WN. Mesopic contrast sensitivity function after excimer laser photorefractive keratectomy[J]. J Refract Surg,2002,18(1):9-13.
[12]
Chylack LT Jr, Jakubicz G, Rosner B, et al. Contrast sensitivity and visual acuity in patients with early cataracts[J]. J Cataract Refract Surg,1993,19(3):399-404.
[13]
Davison JA, Patel AS, Cunha JP, et al. Recent studies provide an updated clinical perspective on blue light-filtering IOLs[J]. Graefes Arch Clin Exp Ophthalmol,2011,249(7):957-968. DOI: 10.1007/s00417-011-1697-6.
[14]
Mester U, Kaymak H. Comparison of the AcrySof IQ aspheric blue light filter and the AcrySof SA60AT intraocular lenses[J]. J Refract Surg,2008,24(8):817-825.