Limbal and axial chamber depth variations

Alsbirk, Poul Helge

doi:10.1111/j.1755-3768.1986.tb00674.x

Cited by 52 publications

(24 citation statements)

References 9 publications

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“…[table-3] Prevalence of occludable angle was 38 % in our study. Similar study conducted in Eskimos showed prevalence of 54.6% (7) and 47.8 % ( 8) in Vietnamese population older than 55 years of age.…”

Section: Resultssupporting

confidence: 78%

“…4 The prevalence rate of angle closure glaucoma among different population is as follows 1.0% in Singapore, 5 and 0.5% to 1.08% in India. 6,7 MATERIALS AND METHODS: Present study was carried out in department of Ophthalmology Kempegowda institute of medical sciences Bangalore from June 2011 to December 2012. This was randomized prospective study aimed at determining prevalence of angle closure in hospital patients and evaluates risk factors responsible for angle closure that may end up in angle closure glaucoma.…”

Section: Introductionmentioning

confidence: 99%

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Risk Factors for Development of Angle Closure Glaucoma in Eyes With Shallow Anterior Chamber

Sundeep¹,

Niveditha²,

Patil³

et al. 2013

jemds

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Section: Resultssupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Risk Factors for Development of Angle Closure Glaucoma in Eyes With Shallow Anterior Chamber

Sundeep¹,

Niveditha²,

Patil³

et al. 2013

jemds

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“…As previous studies reported, a shallower ACD has been considered as a risk factor for PACG, 15,29,30 and the measurement of ACD has been used as a screening tool for angle closure. 16,31,32 Myopia tends to be associated with deep ACD and has been regarded as a protective factor against angle closure.…”

Section: Discussionmentioning

confidence: 99%

Does Myopia Affect Angle Closure Prevalence

Jin

Ding

Guo

et al. 2015

Invest. Ophthalmol. Vis. Sci.

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PURPOSE. To conduct a simulation study to estimate the prevalence of occludable angle (OA), a surrogate for primary angle closure glaucoma (PACG), with the increased rate of myopia in the Chinese population. METHODS.People with phakic eyes in Liwan Eye Study were included as the study sample. Anterior chamber depth (ACD) was measured before dilation by A-mode ultrasound and OA was evaluated with static gonioscopy. Random sampling was used to generate 50 cohorts with sample size of 200 for each of myopic rates 10%, 20%, 40%, 50%, and 135 for myopic rate 60%, according to the multinomial distribution. The mean ACD and OA rates of each cohort were calculated. Logistic function model of nonlinear least-squares estimation was used to predict the prevalence of OA.RESULTS. Data of the right eyes from 1160 subjects were qualified for analysis. The mean age was 64.2 6 9.5 years, with 43% being male. The prevalence of myopia and OA was 32.5% (95% confidence interval [CI], 29.8%-35.3%) and 10.3% (95% CI, 8.7%-12.2%), respectively. The mean ACD in the sampling cohorts increased from 2.68 mm to 2.74 mm when the prevalence of myopia increased from 10% to 60%. The projected prevalence of OA in the cohorts with myopia prevalence of 10%, 20%, 40%, 50%, and 60% was 11.1% (95% CI, 10.5%-11.8%), 10.7% (95% CI, 10.1%-11.4%), 9.9% (95% CI, 9.3%-10.5%), 9.3% (95% CI, 8.8%-9.9%), and 9.6% (95% CI, 8.9-10.3%), respectively.CONCLUSIONS. The increasing prevalence of myopia has minimal impact on the prevalence of OA.

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“…A grade of two or less has been correlated with acute closedangle glaucoma [5]. Studies have reported suboptimal results when using LCDvh to screen for primary angle closure [2,8,9], although Foster et al [10] found that a seven-point grading system resulted in 99% sensitivity compared to gonioscopic evaluation. They along with other authors have reported good inter-observer reproducibility [9].…”

Section: Introductionmentioning

confidence: 97%