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Photophobia measurement in intermittent exotropia using the contrast sensitivity test

Authors
 Seung Ah Chung  ;  Soolienah Rhiu  ;  Seung Han Han  ;  Jong Bok Lee 
Citation
 GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY, Vol.251(5) : 1405-1411, 2013 
Journal Title
GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY
ISSN
 0721-832X 
Issue Date
2013
MeSH
Child ; Contrast Sensitivity/physiology* ; Exotropia/physiopathology* ; Exotropia/surgery ; Female ; Fixation, Ocular/physiology ; Glare ; Humans ; Light ; Male ; Mesopic Vision/physiology ; Oculomotor Muscles/surgery ; Ophthalmologic Surgical Procedures ; Photophobia/physiopathology* ; Vision, Binocular/physiology ; Visual Acuity/physiology
Keywords
Photophobia ; Intermittent exotropia ; Contrast sensitivity test
Abstract
BACKGROUND:
To assess the presence and extent of photophobia in children with intermittent exotropia (X[T]) using the contrast sensitivity test.
METHODS:
Fifty-eight children with X(T) and 34 normal controls were studied with the functional acuity contrast test. Each participant viewed the stimuli of contrast monocularly and binocularly under photopic and mesopic conditions, performed with and without glare. Photophobia was defined as a reduction of contrast sensitivity caused by glare light. We compared the photophobia of children with X(T) to that of normal controls, and to the photophobia 3 months after muscle surgery.
RESULTS:
With stimuli of glare, the contrast sensitivity of children with X(T) was suppressed at intermediate spatial frequencies under mesopic condition (p = 0.006 for 6 cycles per degree [cpd], p = 0.027 for 12 cpd), whereas that of normal controls showed no difference. It occurred when X(T) patients viewed targets binocularly, and significantly improved after strabismus surgery (p = 0.003 at 6 cpd). The measured photophobia of X(T) was strongly correlated to the photophobia symptoms reported by parents (p = 0.002).
CONCLUSIONS:
The mesopic contrast sensitivity with glare can represent the photophobia of children with X(T). Contrast sensitivity may be a useful measure for monitoring symptoms related to X(T).
Full Text
http://link.springer.com/article/10.1007%2Fs00417-012-2241-z
DOI
10.1007/s00417-012-2241-z
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Lee, Jong Bok(이종복)
Han, Seung Han(한승한) ORCID logo https://orcid.org/0000-0001-8972-4790
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/88109
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