Clinical Types of Primary Angle Closure Glaucoma

Lowe, Ronald F.

doi:10.1111/j.1442-9071.1988.tb01216.x

Cited by 68 publications

(45 citation statements)

References 4 publications

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“…20 In our study, the refractive error calculated did not show any significant difference in the groups and the mean values were less than þ 1.0 D. But Grieten and Weekers 23 showed that eyes with angle closure glaucoma had anterior chambers 0.73 mm more shallow, corneal curvatures 0.20 mm less, and corneal diameters 0.48 mm smaller than eyes of the same age with the same degree of hypermetropia. Lowe 4 noted that eyes with PACG are mostly hypermetropic; nevertheless, some are also myopic, so that hypermetropia is insufficient to explain the anatomical conditions that lead to angle closure glaucoma.…”

Section: Eyementioning

confidence: 99%

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Study of biometric parameters in family members of primary angle closure glaucoma patients

Sihota

Ghate

Mohan

et al. 2007

Eye

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Objectives To measure ocular biometric parameters in all possible untreated family members of index primary angle closure glaucoma (PACG) patients and to correlate these values among affected, unaffected, and suspected family members. Methods Anterior chamber depth (ACD), axial length (AL), lens thickness (LT), relative lens position, and central corneal thickness (CCT) were measured in first-and seconddegree relatives of index patients. These biometric parameters were compared among the relatives and index patients as well as among affected, unaffected, and suspected family members. Results Of the 108 family members included in the study, 34 (31.6%) were affected with primary angle closure, 19 (17.6%) were suspect, and 55 (50.7%) were unaffected family members. In comparison to index cases, ACD was 14.56% more in affected, 21.7% more in primary angle closure suspects and 34.92% more in unaffected family members. LT was 10.73, 11.1, 16% less and AL was 0.11, 3.53 and 5.37% more in affected, suspected, and unaffected family members, respectively. Lens position and CCT were not statistically different in the various subgroups. Conclusions ACD is narrowest, lens thickest, and AL shortest in family members affected with PACG compared to suspected and unaffected members. Although LT and ACD could change with advancing age, AL appears to be a marker to identify members at risk of angle closure glaucoma.

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Section: Eyementioning

confidence: 99%

“…[1][2][3][4] Certain racial groups are at an increased risk of developing PACG. [5][6][7][8][9] A positive family history of PACG is an additional risk factor.…”

Section: Introductionmentioning

confidence: 99%

Study of biometric parameters in family members of primary angle closure glaucoma patients

Sihota

Ghate

Mohan

et al. 2007

Eye

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“…8 However, symptoms appear not to be a good indicator of glaucomatous visual loss: 60-75% of persons suffering an acute episode of PAC recover without optic disc or visual field damage, at least in the short term. 9,10 The majority of Asian people suffering from angleclosure experience no symptoms.…”

Section: Definition and Classificationmentioning

confidence: 99%

Angle-closure glaucoma in East Asian and European people. Different diseases?

Foster

Johnson

et al. 2005

Eye

177

102

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In contrast to the pattern of disease in Europeans, primary angle closure has a higher prevalence and tends to be asymptomatic in East Asians. The higher prevalence is attributed to differences in anterior chamber and angle anatomy. Several studies suggest that central anterior chamber depth is shallower in East Asians than in Europeans, although this is not universally accepted. It is debated whether pupil block is the predominant mechanism of angle closure in Asian people. Meaningful comparison between studies is currently hindered by differences in patient selection, examination technique, and case definition; however, the major scientific deficiency is the paucity of prospective followup data to give an insight into natural history of the disease. This review examines the data on prevalence, risk factors, and mechanism of angle closure. Special consideration is given to limitations of methodology in research to date, with the intention of developing more robust data in future studies.

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“…They maintained that their results might provide ex perimental support for the theory of direct lens block as an angle-closure mechanism. Creeping angle-closure glauco ma is uncommon in Caucasians but is much more prevalent in Chinese and those races with similar eyes [5][6][7]. Al though iridectomy will eliminate the component of pupil lary block in creeping angle-closure glaucoma, raised in traocular pressure (IOP) is likely to persist and needs further management [6,7].…”

mentioning

confidence: 99%

Dilated, Miotic-Resistant Pupil and Laser Iridotomy in Primary Angle-Closure Glaucoma

Kim

Jung

1997

Ophthalmologica

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We analyzed 22 eyes with primary angle-closure glaucoma that underwent initial laser iridotomy to determine which factors could lead to subsequent trabeculectomy. Twenty-two eyes were divided into two groups: (1) the eyes in which intraocular pressure (IOP) could be controlled by iridotomy and/or topical medication (iridotomy success group, 15 eyes) and (2) the eyes that underwent trabeculectomy to control IOP in spite of a patent opening (iridotomy failure group, 7 eyes). The clinical variables between the two groups were analyzed. Age, sex, visual field defect, presenting IOP and cup/disk ratio were not significantly different between the iridotomy success and failure groups. However, presence of peripheral anterior synechiae (PAS) greater than 50% was found more frequently in the iridotomy failure group as compared with the iridotomy success group (4/7 vs. 1/15, p = 0.02). Dilated, miotic-resistant pupils were observed only in the iridotomy failure group (4/7 vs. 0/15, p = 0.004). PAS greater than 50% and dilated, fixed pupils were observed in these same cases (4 eyes). Our results suggest that laser iridotomy may not be helpful in cases with dilated and miotic-resistant pupils with formation of extensive PAS.

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Clinical Types of Primary Angle Closure Glaucoma

Cited by 68 publications

References 4 publications

Study of biometric parameters in family members of primary angle closure glaucoma patients

Study of biometric parameters in family members of primary angle closure glaucoma patients

Angle-closure glaucoma in East Asian and European people. Different diseases?

Dilated, Miotic-Resistant Pupil and Laser Iridotomy in Primary Angle-Closure Glaucoma

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