title: Anterior chamber measurements using Pentacam rotating Scheimpflug camera.
abstract: OBJECTIVE
  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.
  
  
  METHODS
  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.
authors.affiliation: Heidelberg IOL & Refractive Surgery Research Group, Department of Ophthalmology, University of Heidelberg, Heidelberg, Germany.
authors.forename: Tanja M
authors.initials: TM
authors.lastname: Rabsilber
authors.forename: Ramin
authors.initials: R
authors.lastname: Khoramnia
authors.forename: Gerd U
authors.initials: GU
authors.lastname: Auffarth
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology; D000867:Anterior Chamber / Q000033:anatomy & histology*; D001837:Body Weights and Measures; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation; D006801:Humans; D008875:Middle Aged; D010781:Photography / Q000295:instrumentation / Q000379:methods*; D011446:Prospective Studies; D015203:Reproducibility of Results