Comparative resilience of clinical perimetric tests to induced levels of intraocular straylight.
Details
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State: Public
Version: Final published version
State: Public
Version: Final published version
Serval ID
serval:BIB_6E430B2BC447
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Comparative resilience of clinical perimetric tests to induced levels of intraocular straylight.
Journal
Investigative Ophthalmology and Visual Science
ISSN
1552-5783 (Electronic)
ISSN-L
0146-0404
Publication state
Published
Issued date
2012
Peer-reviewed
Oui
Volume
53
Number
3
Pages
1219-1224
Language
english
Notes
Publication types: Comparative Study ; Journal ArticlePublication Status: epublish
Abstract
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.
Keywords
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
Yes
Create date
14/05/2012 10:26
Last modification date
20/08/2019 15:27