Relationship between halo size and forward light scatter

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dc.contributor.authorPuell Marín, María Cinta
dc.contributor.authorPérez Carrasco, María Jesús
dc.contributor.authorPalomo Álvarez, Catalina
dc.contributor.authorAntona Peñalba, Beatriz
dc.contributor.authorBarrio De Santos, Ana Rosa
dc.date.accessioned2023-06-19T14:56:25Z
dc.date.available2023-06-19T14:56:25Z
dc.date.issued2014-10
dc.descriptionPublicado online: 9 de mayo de 2014
dc.description.abstractPurpose -To determine the relationship between the size of a halo induced by a glare source and forward scatter or visual acuity (VA) in healthy eyes. Method -Measurements were made in the right eyes of 51 healthy individuals of mean age 29.3±7.5 years. Halo radius was measured using the Vision Monitor and low luminance (1 cd/m2) optotypes presented at a distance of 2.5 m. The visual angle subtended by the radius of the halo was calculated in minutes of arc (arc min). Forward scatter or, straylight, was measured using the compensation comparison technique. Best-corrected distance VA was measured using high contrast (HC) (96%) and low contrast (LC) (10%) Bailey-Lovie logMAR letter charts under photopic (85 cd/m2) and mesopic (0.15 cd/m2) luminance conditions. Results -Mean halo radius was 202±43 arc min (3.4±0.7°) and mean retinal straylight was 0.95±0.12 log units. Mean photopic distance HC-VA and LC-VA were −0.02±0.06 and 0.12±0.09 logMAR, respectively. Mean mesopic distance HC-VA and LC-VA were 0.35±0.11 and 0.74±0.11 logMAR, respectively. Forward stepwise regression analysis revealed that halo radius was significantly correlated with straylight (r=0.45) and mesopic LC-VA (r=0.48), but not with photopic HC-VA and/or LC-VA and mesopic HC-VA. Conclusions -In healthy eyes, the larger the halo size induced by a given glare source, the greater the forwardscatter (straylight) and worse the mesopic LC-VA. Halo size seems to be independent of photopic HC-VA or LC-VA and mesopic HC-VA.en
dc.description.departmentDepto. de Optometría y Visión
dc.description.facultyFac. de Óptica y Optometría
dc.description.refereedTRUE
dc.description.sponsorshipBanco Santander-Universidad Complutense de Madrid
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/33273
dc.identifier.citationPuell Marín, M. C., Pérez Carrasco, M. J., Palomo Álvarez, C. et al. «Relationship between Halo Size and Forward Light Scatter». British Journal of Ophthalmology, vol. 98, n.o 10, octubre de 2014, pp. 1389-92. bjo.bmj.com, https://doi.org/10.1136/bjophthalmol-2014-304872.
dc.identifier.doi10.1136/bjophthalmol-2014-304872
dc.identifier.issn0007-1161
dc.identifier.officialurlhttp://dx.doi.org/10.1136/bjophthalmol-2014-304872
dc.identifier.relatedurlhttp://bjo.bmj.com/content/early/2014/05/09/bjophthalmol-2014-304872
dc.identifier.urihttps://hdl.handle.net/20.500.14352/34879
dc.issue.number10
dc.journal.titleBritish Journal of Ophthalmology
dc.language.isoeng
dc.page.final1392
dc.page.initial1389
dc.publisherBMJ Publishing Group
dc.relation.projectIDGR 35/10-A
dc.rights.accessRightsrestricted access
dc.subject.cdu617.75
dc.subject.cdu617.751.9
dc.subject.keywordNight-vision disturbances
dc.subject.keywordIn-situ keratomileusis
dc.subject.keywordRetinal image quality
dc.subject.keywordIntraocular straylight
dc.subject.keywordVisual acuity
dc.subject.keywordGlare
dc.subject.keywordLasik
dc.subject.keywordCataract
dc.subject.keywordAged eye
dc.subject.ucmBaja visión
dc.subject.ucmOptometría
dc.subject.ucmÓptica oftálmica
dc.subject.ucmLáseres
dc.subject.unesco2209.24 Física de la visión
dc.subject.unesco2209.15 Optometría
dc.subject.unesco2209.10 Láseres
dc.titleRelationship between halo size and forward light scatteren
dc.typejournal article
dc.volume.number98
dspace.entity.typePublication
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