Incidence of Acute Primary Angle-closure Glaucoma in Singapore

Seah, S.K.W.; Foster, Paul J.; Chew, Paul; Jap, Aliza; Oen, Francis T.S.; Fam, Han Bor; Lim, Arthur

doi:10.1001/archopht.1997.01100160606014

Cited by 253 publications

(149 citation statements)

References 15 publications

(1 reference statement)

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“…The prevalence of AACG has been reported as being 0.18% in those aged over 40 years in Europe, and the incidence of AACG has been reported as being 12.2 per 10 00 000 per year in those aged over 30 years in Asia. 10,11 Given the prevalence of AACG, an understanding of RNFL changes in AACG as measured by the GDx will assist the assessment and management of AACG. This study used the GDx to evaluate RNFL thickness and various GDx parameters after AACG remission, using normal control eyes for comparison.…”

Section: Introductionmentioning

confidence: 99%

Scanning laser polarimetry in patients with acute angle-closure glaucoma

Tsai

2004

Eye

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Section: Introductionmentioning

confidence: 99%

Scanning laser polarimetry in patients with acute angle-closure glaucoma

Tsai

2004

Eye

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“…[1][2][3][4][5][6] Although vision deteriorates within a short time after the onset of acute ACG in some cases, because there are neither subjective symptoms nor abnormalities, such as glaucomatous optic neuropathy or elevated intraocular pressure (IOP), until the actual onset, it is rarely detected in regular health examinations. On the other hand, as other forms of glaucoma, such as primary open angle glaucoma (POAG), occur and progress very slowly, abnormalities may be detected in fundus examinations and other ophthalmologic examinations.…”

Section: Introductionmentioning

confidence: 99%

Finding cases of angle-closure glaucoma in clinic setting using a newly developed instrument

Kashiwagi

Kashiwagi²,

Hiejima

et al. 2005

Eye

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Purpose To validate the applicability of a newly developed, noncontact scanning peripheral anterior chamber depth analyzer (SPAC) for screening eyes at the risk of angleclosure glaucoma (ACG). Subjects and methods All glaucoma patients who visited the University of Yamanashi Hospital from February through May 2003 were enrolled, except those with aphakic eye or pseudophakic eye. Of the 552 enrolled patients, 48 with ACG or narrow angles requiring laser iridotomy (LI) were categorized as patients with high-risk ACG eyes, and those with open angle were categorized as patients with control eyes. In all, 20 patients with ACG or narrow angles requiring prophylactic LI, who were followed up by an independent private ophthalmic clinic, were enrolled for threshold analysis. Nonophthalmologists measured anterior chamber depth and the averaged values of three measurements were employed for analysis. Threshold analysis and discriminant analysis were employed for determining the sensitivity and specificity of SPAC for diagnosing eyes with high-risk ACG. Results SPAC distinguished well the highrisk ACG eyes from the control eyes, and one of the most useful criteria for screening is as follows: any of the four measured points should exceed 95% confidence interval, and sensitivity and specificity should be 97.6 and 83.5%, respectively. Conclusion SPAC is thought to be useful for detecting eyes at the risk of ACG by nonophthalmologists.

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“…The prevalence of glaucoma varies by region and race, with open-angle glaucoma more frequent among persons of West African descent and angle-closure glaucoma (ACG) more frequent among South Asian [1][2][3] and Inuit 4 populations. Up to 10% of Inuit/Eskimo women and 2% of men over 40 years are affected by ACG.…”

Section: Introductionmentioning

confidence: 99%

“…5 ACG incidence is high among people of Asian heritage. [1][2][3] An island-wide survey in Singapore reported incidence rates of acute primary angle closure (APAC) at 12 cases per 100 000 per year in those aged 30 years and older. 1 In that study and in a subsequent hospital admission-based study, Singaporean residents of Chinese ethnicity were at highest risk, followed by Malays and Indians who had identical rates of incidence of 6.0 cases per 100 000 per year.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] An island-wide survey in Singapore reported incidence rates of acute primary angle closure (APAC) at 12 cases per 100 000 per year in those aged 30 years and older. 1 In that study and in a subsequent hospital admission-based study, Singaporean residents of Chinese ethnicity were at highest risk, followed by Malays and Indians who had identical rates of incidence of 6.0 cases per 100 000 per year. 2,6 The Vellore Eye Study (VES) investigators reported a prevalence of 4.3% (95% CI 3.0-5.6%) of primary angle closure glaucoma (PACG) in Southern India, all of which were of the chronic type.…”

Section: Introductionmentioning

confidence: 99%

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Ethnic aspects of acute primary angle closure in a UK mulicultural conurbation

Ramesh

Maw

Sutton

et al. 2004

Eye

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Aim To investigate the incidence and ethnic distribution of patients with symptomatic acute primary angle closure (APAC) who presented to a UK hospital serving a multicultural conurbation by a populationwide case series investigation. Methods Case series chart review of patients aged 30 years and above, who required laser peripheral iridotomy (LPI) for a primary acute angle closure event over a 7-year period. Demographic data for cases were compared to the local resident census data. Results A total of 46 local residents aged X30 years required LPI for APAC. In all, 96% of patients were Caucasian compared to the local resident population of 89% Caucasian. The overall annual APAC rate for Bolton was 4.14 cases per 100 000 population (95% CI 3.03-5.52). The standardised incidence ratio for the South Asian population was 0.78 (95% CI 0.02-4.34) and 26.6 (95% CI 0.67-148.40) for the Chinese population. Conclusions APAC incidence in South Asians was similar to that among Caucasians. The incidence of APAC patients treated in this UK department is consistent with international experience. Individuals of Chinese ethnicity were at an enhanced risk of APAC. However, these results should be interpreted with caution, as patient numbers are small.

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Incidence of Acute Primary Angle-closure Glaucoma in Singapore

Cited by 253 publications

References 15 publications

Scanning laser polarimetry in patients with acute angle-closure glaucoma

Scanning laser polarimetry in patients with acute angle-closure glaucoma

Finding cases of angle-closure glaucoma in clinic setting using a newly developed instrument

Ethnic aspects of acute primary angle closure in a UK mulicultural conurbation

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