Comparative resilience of clinical perimetric tests to induced levels of intraocular straylight.

Détails

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Etat: Public
Version: Final published version
ID Serval
serval:BIB_6E430B2BC447
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Comparative resilience of clinical perimetric tests to induced levels of intraocular straylight.
Périodique
Investigative Ophthalmology and Visual Science
Auteur(s)
Oleszczuk J.D., Bergin C., Sharkawi E.
ISSN
1552-5783 (Electronic)
ISSN-L
0146-0404
Statut éditorial
Publié
Date de publication
2012
Peer-reviewed
Oui
Volume
53
Numéro
3
Pages
1219-1224
Langue
anglais
Notes
Publication types: Comparative Study ; Journal ArticlePublication Status: epublish
Résumé
PURPOSE: To investigate the effect of intraocular straylight (IOS) induced by white opacity filters (WOF) on threshold measurements for stimuli employed in three perimeters: standard automated perimetry (SAP), pulsar perimetry (PP) and the Moorfields motion displacement test (MDT).¦METHODS: Four healthy young (24-28 years old) observers were tested six times with each perimeter, each time with one of five different WOFs and once without, inducing various levels of IOS (from 10% to 200%). An increase in IOS was measured with a straylight meter. The change in sensitivity from baseline was normalized, allowing comparison of standardized (z) scores (change divided by the SD of normative values) for each instrument.¦RESULTS: SAP and PP thresholds were significantly affected (P < 0.001) by moderate to large increases in IOS (50%-200%). The drop in motion displacement (MD) from baseline with WOF 5, was approximately 5 dB, in both SAP and PP which represents a clinically significant loss; in contrast the change in MD with MDT was on average 1 minute of arc, which is not likely to indicate a clinically significant loss.¦CONCLUSIONS: The Moorfields MDT is more robust to the effects of additional straylight in comparison with SAP or PP.
Mots-clé
Adult, Female, Humans, Light, Photic Stimulation, Reference Values, Sensory Thresholds/physiology, Visual Field Tests/methods, Visual Fields/physiology, Visual Perception/physiology, Young Adult
Pubmed
Web of science
Open Access
Oui
Création de la notice
14/05/2012 9:26
Dernière modification de la notice
20/08/2019 14:27
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