Anterior chamber measurements using Pentacam rotating Scheimpflug camera

  • Rabsilber T
  • Khoramnia R
  • Auffarth G
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Abstract

Purpose: To investigate the mean values and standard deviations according to age, reliability, and correlation between different parameters of anterior chamber measurements using the Pentacam rotating Scheimpflug camera. Setting: Heidelberg IOL and Refractive Surgery Research Group, Department of Ophthalmology, University of Heidelberg, Heidelberg, Germany. Methods: This prospective clinical study comprised 76 healthy volunteers (mean age 46.6 years ± 16.8 [SD]). Three consecutive measurements were made of only 1 eye and anterior chamber depth (ACD), mean and minimum anterior chamber angle (ACA), and anterior chamber volume (ACV) were evaluated. Results: Mean ACD was 2.93 ± 0.36 mm, mean ACA was 34.81 ± 5.05 degrees, minimum ACA was 29.99 ± 5.53 degrees, and mean ACV was 160.3 ± 36.81 mm3. Increasing age was associated with reduced ACD and ACV; however, mean and minimum ACAs were lowest in patients aged 40 to 59 years. Excellent correlation was found between ACD and ACV (R = 0.92). Anterior chamber depth and mean ACA correlated only moderately (R = 0.65). The correlation coefficient between ACD and minimum ACA was smaller (R = 0.58). There was no correlation between ACV and ACA (R = 0.37). Minor standard deviations were noted (ACD 0.02 ± 0.02 mm, mean ACA 1.12 ± 0.94 degrees, minimum ACA 2.04 ± 2.67 degrees, and ACV 2.48 ± 1.65 mm3). Conclusions: Using the Pentacam, it was possible to examine different parameters of the anterior chamber within a short period and with good reliability. The evaluation of the ACA in different positions can help to classify the potential risk for angle-closure glaucoma. © 2006 ASCRS and ESCRS.

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Authors

  • Tanja M. Rabsilber

  • Ramin Khoramnia

  • Gerd U. Auffarth

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