D-15 Performance with Short Wavelength Absorbing Filters in Normals

Thomas, Shelia D.; Kuyk, Thomas

doi:10.1097/00006324-198809000-00002

Cited by 13 publications

(5 citation statements)

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“…They are able to reduce discomfort glare in those with age‐related macular degeneration without affecting either VA or contrast sensitivity. As expected, differential absorption across the visible spectrum causes colour vision to be distorted . This was partly due to the reduction in spectral transmission as the neutral density filters also affected colour perception.…”

Section: Discussionmentioning

confidence: 51%

Functional and perceived benefits of wearing coloured filters by patients with age‐related macular degeneration

Bailie¹,

Wolffsohn

Stevenson³

et al. 2013

Clinical and Experimental Optometry

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Background:The aim was to investigate the visual effect of coloured filters compared to transmission-matched neutral density filters, in patients with dry age-related macular degeneration. Methods: Visual acuity (VA, logMAR), contrast sensitivity (Pelli-Robson) and colour vision (D15) were recorded for 39 patients (average age 79.1 Ϯ 7.2 years) with age-related macular degeneration, both in the presence and absence of glare from a fluorescent source. Patients then chose their preferred coloured and matched neutral density transmission filters (NoIR). Visual function tests were repeated with the chosen filters, both in the presence and absence of glare from the fluorescent source. Patients trialled the two filters for two weeks each, in random order. Following the trial of each filter, a telephone questionnaire was completed.

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Section: Discussionmentioning

confidence: 51%

Functional and perceived benefits of wearing coloured filters by patients with age‐related macular degeneration

Bailie¹,

Wolffsohn

Stevenson³

et al. 2013

Clinical and Experimental Optometry

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“…After 19 duplicates were removed, we screened the remaining 99 references and obtained the full‐text reports of 15 references for further assessment. Twelve of these were eliminated (see Table of Excluded Studies in File S2 and three RCTs that met the a priori criteria for inclusion were included in the final analysis (see Characteristics of Included Studies in File S3. We did not identify any on‐going studies from our searches of the clinical trials registries.…”

Section: Resultsmentioning

confidence: 99%

The effect of blue‐light blocking spectacle lenses on visual performance, macular health and the sleep‐wake cycle: a systematic review of the literature

Lawrenson

Hull

Downie

2017

Ophthalmic Physiologic Optic

124

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Purpose: Blue-blocking (BB) spectacle lenses, which attenuate short-wavelength light, are being marketed to alleviate eyestrain and discomfort when using digital devices, improve sleep quality and potentially confer protection from retinal phototoxicity. The aim of this review was to investigate the relative benefits and potential harms of these lenses. Methods: We included randomised controlled trials (RCTs), recruiting adults from the general population, which investigated the effect of BB spectacle lenses on visual performance, symptoms of eyestrain or eye fatigue, changes to macular integrity and subjective sleep quality. We searched MEDLINE, EMBASE, the Cochrane Library and clinical trial registers, until 30 April 2017. Risk of bias was assessed using the Cochrane tool. Results: Three studies (with 136 participants) met our inclusion criteria; these had limitations in study design and/or implementation. One study compared the effect of BB lenses with clear lenses on contrast sensitivity (CS) and colour vision (CV) using a pseudo-RCT crossover design; there was no observed difference between lens types (log CS; Mean Difference (MD) = À0.01 [À0.03, 0.01], CV total error score on 100-hue; MD = 1. 30 [À7.84, 10.44]). Another study measured critical fusion frequency (CFF), as a proxy for eye fatigue, on wearers of low and high BB lenses, pre-and post-a two-hour computer task. There was no observed difference between low BB and standard lens groups, but there was a less negative change in CFF between the high and low BB groups (MD = 1. 81 [0.57, 3.05]). Both studies compared eyestrain symptoms with Likert scales. There was no evidence of inter-group differences for either low BB (MD = 0.00 [À0.22, 0.22]) or high BB lenses (MD = À0.05 [À0.31, 0.21]), nor evidence of a difference in the proportion of participants showing an improvement in symptoms of eyestrain or eye fatigue. One study reported a small improvement in sleep quality in people with self-reported insomnia after wearing high compared to low-BB lenses (MD = 0.80 [0.17, 1.43]) using a 10-point Likert scale. A study involving normal participants found no observed difference in sleep quality. We found no studies investigating effects on macular structure or function. Conclusions: We find a lack of high quality evidence to support using BB spectacle lenses for the general population to improve visual performance or sleep quality, alleviate eye fatigue or conserve macular health.

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“…18,19 A change in color perception and color discrimination with blue-light filters is plausible and was confirmed in studies using blue-blocking filters in trial frames. 20 However, these experiments cannot be directly compared with experiments using IOLs due to a double-filtering effect with the crystalline lens. An increase in color contrast sensitivity was seen in patients who had cataract extraction and implantation of a clear IOL, indicating the cataractous yellowing of the natural lens has a negative effect on color contrast sensitivity.…”

mentioning

confidence: 99%

Intraindividual comparison of color contrast sensitivity in patients with clear and blue-light-filtering intraocular lenses

Schmidinger¹,

Menapace²,

Pieh³

2008

Journal of Cataract and Refractive Surgery

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D-15 Performance with Short Wavelength Absorbing Filters in Normals

Cited by 13 publications

References 0 publications

Functional and perceived benefits of wearing coloured filters by patients with age‐related macular degeneration

Functional and perceived benefits of wearing coloured filters by patients with age‐related macular degeneration

The effect of blue‐light blocking spectacle lenses on visual performance, macular health and the sleep‐wake cycle: a systematic review of the literature

Intraindividual comparison of color contrast sensitivity in patients with clear and blue-light-filtering intraocular lenses

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