Slitlamp Estimate of Anterior Chamber Depth as a Predictor of the Gonioscopic Visibility of the Angle Structures

Cockburn, David

doi:10.1097/00006324-198211000-00010

Cited by 12 publications

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“…Probably the authors suspected methodological problems, but details were not discussed. Cockburn (1978Cockburn ( , 1982 has published results from a Master Thesis study on the van Herick test.…”

Section: Discussionmentioning

confidence: 99%

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Limbal and axial chamber depth variations

Alsbirk

1986

Acta Ophthalmologica

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In an unselected population sample of 505 adult Greenland Eskimos limbal chamber depth (LCD) was estimated according to van Herick et al. (1969), and axial chamber depth (ACD) was measured optically using Haag Streit pachymetry. For comparison LCD was estimated in 308 Danes above 40 years. A marked naso-temporal asymmetry in LCD scoring was found indicating a shallower chamber at the temporal limbus. No corresponding gonioscopic asymmetry was observed. Significant age, sex, and ethnic variations were demonstrated, the lower levels of both parameters being found in elderly persons, women and Eskimos, respectively. Danes showed a lower level of LCD scores than reported in Americans. In detection of eyes showing shallow chambers in the Eskimo population (arbitrarily: ACD less than or equal to 2.0 mm) the van Herick slit-lamp test at temporal limbus yielded a sensitivity of 91%, a specificity of 53% and predictive values of a positive and a negative test of 30% and 96%, respectively. At gonioscopy narrow angles were often found among eyes showing LCD less than or equal to 1/4 of corneal thickness, even when ACD was greater than 2.0 mm (in 25%).

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Section: Discussionmentioning

confidence: 99%

“…Only few papers have dealt with this or similar procedures, but have on the whole confirmed their value as a primary step before gonioscopy and provocative tests. (Kessler 1969;Vargas & Drance 1973;Cockburn 1978Cockburn , 1982Lu 1979).…”

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confidence: 99%

Limbal and axial chamber depth variations

Alsbirk

1986

Acta Ophthalmologica

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“…This technique has been demonstrated to be valid in other studies. [28][29][30] Our research shows that the peripheral ACD declines by 0.31 CT per diopter of SE and was 0.19 CT shallower in women than in men. Our findings agree with previous studies that women are more likely to have a shallower peripheral ACD.…”

Section: Resultsmentioning

confidence: 54%

Peripheral Anterior Chamber Depth and Screening Techniques for Primary Angle Closure Disease in Community Elderly Chinese

Xue

Luo

Yuan

et al. 2020

Preprint

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Purpose To investigate the distribution of peripheral anterior chamber depth (ACD) and the relationship between peripheral ACD and gonioscopy compared to other ocular parameters (peripheral ACD, spherical equivalent [SE], intraocular pressure [IOP]) for primary angle closure disease (PACD) screening in an elderly Chinese community. Methods Cross-sectional study. Adults 50 and older were enrolled from a population-based study using cluster random sampling in Pudong New District, Shanghai. Remote ocular screening was performed with digital anterior eye structure photography. Van Herrick measurements were used to evaluate the peripheral ACD, the depth of the peripheral anterior chamber, and corneal thickness (CT), and the ACD to CT ratio was calculated. Subjects with peripheral ACD less than 0.5 CT were made follow-up appointments for clinical examination with gonioscopy. Receiver operating characteristic curves (ROC) were generated to show the performance of different tests in screening for primary angle closure disease (PACD). Results 2528 adults participated in the study with 91 patients diagnosed with PACD. 2463 subjects had valid data in the right eye available for analysis. The mean peripheral ACD values for men and women were significantly different: 1.04±0.46 (range 0.11-2.93) CT and 0.87±0.41 (range 0.12-2.96) CT respectively (t=-4.18; P<0.0001). Multivariate logistic regression analysis reveals that peripheral ACD declined by 0.31 CT (P<0.0001) per diopter of SE and was 0.19 CT (P<0.0001) shallower in women than in men (r2=0.1304, P<0.0001). Peripheral ACD performed best in screening for PACD. Conclusions Peripheral ACD measurement is recommended for PACD screening in community elderly Chinese.

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“…First, according to Van Herrick, a subject with a peripheral ACD ≥0.5 CT would have a very low probability of having angle closure. [25] Second, there was a study in Australia, in which goniscopy was carried out only with peripheral ACD ≤ 0.3 CT. [28] Third, Foster et al performed goniscopy on subjects and indicated that in subjects witth peripheral ACD ≥0.5 CT, no patients had closed angles. Moreover, when the cut off of <0.3 CT with peripheral ACD was used in this study, the Youden index was still not particularly high, which called a measure with a higher sensitivity for community screening of glaucoma.…”

Section: Discussionmentioning

confidence: 99%

Peripheral Anterior Chamber Depth and Screening Techniques for Primary Angle Closure Disease in Community Elderly Chinese

Luo

Xue

Yuan

et al. 2020

Preprint

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Background To investigate the distribution of peripheral anterior chamber depth (ACD) and the relationship between peripheral ACD and gonioscopy compared to other ocular parameters for primary angle closure disease (PACD) screening. Methods Cross-sectional study. Adults 50 and older were enrolled from a population-based study using cluster random sampling in Pudong New District, Shanghai. Remote ocular screening was performed with digital anterior eye structure photography. Van Herrick measurements were used to evaluate the peripheral ACD, the depth of the peripheral anterior chamber, and corneal thickness (CT), and the ACD to CT ratio was calculated. Subjects with peripheral ACD less than 0.5 CT were made follow-up appointments for clinical examination with gonioscopy. Receiver operating characteristic curves (ROC) were generated to show the performance of different tests in screening for primary angle closure disease (PACD). Results 2528 adults participated in the study with 91 patients diagnosed with PACD. 2463 subjects had valid data in the right eye available for analysis. The mean peripheral ACD values for men and women were significantly different: 1.04±0.46 (range 0.11-2.93) CT and 0.87±0.41 (range 0.12-2.96) CT respectively (t=-4.18; P<0.0001). Multivariate logistic regression analysis reveals that peripheral ACD declined by 0.31 CT (P<0.0001) per diopter of SE and was 0.19 CT (P<0.0001) shallower in women than in men (r2=0.1304, P<0.0001). Peripheral ACD performed best in screening for PACD. Conclusions Peripheral ACD measurement is recommended for PACD screening in community elderly Chinese.

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Slitlamp Estimate of Anterior Chamber Depth as a Predictor of the Gonioscopic Visibility of the Angle Structures

Cited by 12 publications

References 0 publications

Limbal and axial chamber depth variations

Limbal and axial chamber depth variations

Peripheral Anterior Chamber Depth and Screening Techniques for Primary Angle Closure Disease in Community Elderly Chinese

Peripheral Anterior Chamber Depth and Screening Techniques for Primary Angle Closure Disease in Community Elderly Chinese

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