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Co-author(s)
Kim, Yong Yeon, Department of Ophthalmology, Korea University College
of Medicine, Seoul, South-Korea
The Korean Glaucoma Society, Department of Ophthalmology Inje University
College of Medicine, Seoul, South-Korea
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Purpose: To estimate
the prevalence of primary angle-closure suspect (PACS), primary angle-closure
(PAC), and primary angle-closure glaucoma (PACG) in a Korean population
as a part of the Namil Study.
Design: Population based epidemiological
survey
Participants: 1,909 persons over 40 years of age residing in Namil district, Chungnam province, Korea, 1,539 persons participated
in the study.
Methods: Each subject underwent full screening tests for
the detection of glaucoma including an interview, Goldmann applanation
tonometry, slit-lamp biomicroscopy, refraction, a van Herick test, fundus
photography, corneal thickness measurement with ultrasound pachymetry,
a visual field test using frequency-doubling technology, gonioscopy,
and ocular biometry using IOL master. If the findings were suspicious
or equivocal, visual field tests with Humphrey field analyzer as well
as optical coherence tomography and scanning laser polarimetry were
performed for confirmation of the diagnosis. A diagnosis of PACS (posterior
trabecular meshwork not visible by gonioscopy in >3 quarters of the
angle circumference), PAC (PACS plus elevated IOP, peripheral anterior
synechiae, iris distortion, and/or glaukomflecken), or PACG (PAC plus
optic nerve/visual field damage) was made based on the gonioscopy, optic
disc appearance, perimetry, and imaging tests.
Main outcome measure:
The prevalence of PACS, PAC and PACG were measured.
Results: Of 1,909
persons over 40 years of age residing in Namil district, Chungnam province,
Korea, 1,539 persons participated in the study. Estimated prevalences
of PACS, PAC, and PACG were 2.1%, 0.5% and 0.5% respectively.
Conclusions: Prevalences were 2.1%, 0.5%, and 0.5%, respectively, for PACS, PAC,
and PACG in subjects over 40 years from Namil, Korea.
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