Visual Performance in the "Real World": Contrast Sensitivity, Visual Acuity, and Effects of Macular Carotenoids.

Autor: Roark MW; Allisonville Eye Care Center, 10967 Allisonville Rd #120, Fishers, IN, 46038, USA., Stringham JM; Duke Eye Center, Visual Performance Laboratory, 2351 Erwin Road, Durham, NC, 27710, USA.
Jazyk: angličtina
Zdroj: Molecular nutrition & food research [Mol Nutr Food Res] 2019 Aug; Vol. 63 (15), pp. e1801053. Date of Electronic Publication: 2019 Jul 02.
DOI: 10.1002/mnfr.201801053
Abstrakt: Visual acuity (VA) is compared to contrast sensitivity (CS) testing in assessing "real-world" visual performance, and it is recommended that both should be measured routinely in the clinic. The role of nutritional intervention in improving visual performance is reviewed and emphasized. A brief history and illustration of both VA and CS, within the scope of visual performance, is presented. Parameters for effective CS testing in the clinic, and guidelines for interpretation of results, including a new model for understanding the visual impact of changes in CS, are also presented. Relevant research that supports the use of the macular carotenoids lutein, zeaxanthin, and meso-zeaxanthin to enhance visual performance is reviewed with suggested guidelines for supplementation. CS testing is easily performed at a single intermediate target size and is an excellent tool for the accurate assessment of a patient's overall visual experience. Research continues to uncover the strong link between nutrition and visual performance; the macular carotenoids appear to be especially effective in this regard, and their benefits to visual performance now importantly include contrast sensitivity. Clinicians can provide an improved level of care by incorporating into the examination protocol CS testing and, where appropriate, nutritional counseling and intervention.
(© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Databáze: MEDLINE
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