Original articleA Population-based Survey of the Prevalence and Types of Glaucoma in Nepal: The Bhaktapur Glaucoma Study
Section snippets
Study Design
The rationale, methods, and baseline demographics of BGS have been published in detail.12 In brief, the survey involved the selection of 4800 subjects aged 40 years or older residing in the Bhaktapur district.
A 2-stage World Health Organization 30-cluster sampling procedure was adopted for patient selection.13 The sampling frame comprised 161 wards and an estimated population of 48 223 people aged more than 40 years.14 In the first stage, 30 wards were selected and field workers conducted a
Results
The distribution of IOP and VCDR from subjects with a normal result on suprathreshold field screening in both eyes of the nonglaucomatous population is shown in Table 2. This includes the 97.5th and 99.5th percentile points used in allocating diagnoses.
Of 4800 enumerated subjects, 4003 were examined (response rate, 83.39%). Data were incomplete for 12 subjects, leaving 3991 for analysis (83.15%). The mean age of the study population was 55.08 years (standard deviation, 11.50 years), and more
Discussion
The BGS is the first study in Nepal to report the prevalence of glaucoma based on the ISGEO criteria and is therefore comparable to other studies around the world that follow the same criteria.
The median IOP of 13.0 mmHg was similar to that in studies from the region8, 10, 18, 19 but lower than in reports on the Caucasian population.20, 21 The median VCDR was 0.20 (97.5th percentile, 0.6 mmHg). We recommend that a VCDR of >0.6 be viewed with suspicion for glaucoma in our population. The West
References (24)
- et al.
Glaucoma in a rural population of southern India: the Aravind Comprehensive Eye Survey
Ophthalmology
(2003) - et al.
Open-angle glaucoma in an urban population in southern India: the Andhra Pradesh Eye Disease Study
Ophthalmology
(2000) - et al.
Angle-closure glaucoma in an urban population in southern India: the Andhra Pradesh Eye Disease Study
Ophthalmology
(2000) - et al.
Prevalence of open-angle glaucoma in Australia: the Blue Mountains Eye Study
Ophthalmology
(1996) - et al.
The prevalence of primary open-angle glaucoma in Japanese: the Tajimi Study
Ophthalmology
(2004) Number of people with glaucoma worldwide
Br J Ophthalmol
(1996)- et al.
Prevalence of primary glaucoma in an urban South Indian population
Indian J Ophthalmol
(1998) - et al.
Prevalence of open-angle glaucoma in a rural south Indian population
Invest Ophthalmol Vis Sci
(2005) - et al.
Prevalence of angle-closure disease in a rural southern Indian population
Arch Ophthalmol
(2006) - et al.
A population based survey of the prevalence and types of glaucoma in rural West Bengal: the West Bengal Glaucoma Study
Br J Ophthalmol
(2005)
Prevalence and clinical characteristics of glaucoma in adult Chinese: a population-based study in Liwan District, Guangazhou
Invest Ophthalmol Vis Sci
Glaucoma in Mongolia: a population-based survey in Hovsgol province, northern Mongolia
Arch Ophthalmol
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Manuscript no. 2011-542.
Financial Disclosure(s): The author(s) have no proprietary or commercial interest in any materials discussed in this article.