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A computerized red glass test for quantifying diplopia

 Han Soo Yoo  ;  Eunjeong Park  ;  Soolienah Rhiu  ;  Hyuk-Jae Chang  ;  Kyoungsub Kim  ;  Joonsang Yoo  ;  Ji Hoe Heo  ;  Hyo Suk Nam 
 BMC Ophthalmology, Vol.17(1) : 71-71, 2017 
Journal Title
 BMC Ophthalmology 
Issue Date
Adult ; Aged ; Diagnosis, Computer-Assisted/methods* ; Diplopia/diagnosis* ; Diplopia/physiopathology ; Female ; Humans ; Male ; Middle Aged ; Optics and Photonics* ; Pilot Projects ; Prospective Studies ; Reproducibility of Results ; Visual Field Tests/methods ; Visual Fields/physiology* ; Young Adult
Computer software ; Diplopia ; Neurologic examination ; Quantification
BACKGROUND: Accurate evaluation of diplopia during bedside physical examination is challenging. We developed a new computerized red glass test (CRT) to detect, localize, and quantify diplopia and investigated whether the CRT is useful and feasible. METHODS: During the CRT, a white dot randomly appears on a monitor. Because a red glass is applied on the right eye, a patient can see one white dot and one red dot when diplopia is present. We defined the degree of diplopia as the direct distance of the two points with the largest deviation and compared the degree with the Hess score and Hess area ratio. RESULTS: We prospectively enrolled 14 patients with binocular diplopia. Test-retest reliability of the CRT was excellent (overall intraclass correlation coefficient = 0.948, 95% CI 0.939-0.956). The degree of diplopia in the CRT was well correlated with both the Hess score (r = 0.719, p = 0.005) and the Hess area ratio (r = -0.620, p = 0.018). CONCLUSIONS: The CRT can easily detect the presence of diplopia and provided the quantitative values of the degree of diplopia. The CRT was useful and feasible for improving routine bedside examination.
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1. College of Medicine (의과대학) > Dept. of Neurology (신경과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Plastic and Reconstructive Surgery (성형외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
5. Research Institutes (연구소) > Oral Cancer Research Institute (구강종양연구소) > 1. Journal Papers
Yonsei Authors
김경섭(Kim, Kyoung Sub)
남효석(Nam, Hyo Suk) ORCID logo https://orcid.org/0000-0002-4415-3995
박은정(Park, Eunjeong)
유준상(Yoo, Joon Sang)
유한수(Yoo, Han Soo) ORCID logo https://orcid.org/0000-0001-7846-6271
장혁재(Chang, Hyuck Jae) ORCID logo https://orcid.org/0000-0002-6139-7545
허지회(Heo, Ji Hoe) ORCID logo https://orcid.org/0000-0001-9898-3321
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