Anterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner
Haya M Al-Farhan, Reem N AlMutairi
King Saud University, College of Applied Medical Sciences, Department of Optometry and Vision Sciences, Riyadh, Kingdom of Saudi Arabia
Purpose: To compare the precision of anterior chamber angle (ACA) and anterior chamber depth (ACD) measurements taken with ultrasound biomicroscopy (UBM) and the Artemis-2 Very High Frequency Ultrasound Scanner (VHFUS) in normal subjects.
Design: Prospective study.
Methods: We randomly selected one eye from each of 59 normal subjects in this study. Two subjects dropped out of the study; the associated data were excluded from analysis. ACA and ACD measurements were obtained using the VHFUS and the UBM. The results were compared statistically using repeated-measures analysis of variance for the intraobserver repeatability, unpaired t-test, and limits of agreement.
Results: The average ACA values for the UBM and the VHFUS (±standard deviation) were 41.83° ± 5.03° and 33.36° ± 6.03°, respectively. The average ACD values were 2.96 ± 0.34 mm and 2.87 ± 0.31 mm. The intraobserver repeatability analysis of variance P-values for ACA and ACD measurements using UBM were 0.10 and 0.68, respectively; for the Artemis-2 VHFUS, the respective values were 0.68 and 0.09. The difference in ACA measurements was statistically significant (t = 8.41; P < 0.0001), while the difference in ACD values was not (t = 1.51; P < 0.13). The mean ACA difference was 8.50° ± 2.50°, and the limits of agreement were +13.30° to −3.60°. The mean ACD difference was 0.09 ± 0.27 mm, and the limits of agreement ranged from 0.61 mm to −0.43 mm. The mean difference percentage of ACD was 3.1% for both instruments.
Conclusion: In case of the ACD, both instruments can be used interchangeably; however, with the ACA instruments, they cannot be used interchangeably.
Keywords: anterior chamber angle, anterior chamber depth, Artemis-2 VHF scanner, ultrasound biomicroscope, normal eyes
This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.Download Article [PDF] View Full Text [HTML][Machine readable]
Other article by this author:
Comparison of central corneal thickness measurements using ultrasound pachymetry, ultrasound biomicroscopy, and the Artemis-2 VHF scanner in normal eyes
Al-Farhan HM, Al-Otaibi WM
Published Date: 6 July 2012
Readers of this article also read:
Causative factors for formation of toxic islet amyloid polypeptide oligomer in type 2 diabetes mellitus
Jeong HR, An SSA
Published Date: 19 November 2015
Evaluating preferences for profiles of GLP-1 receptor agonists among injection-naïve type 2 diabetes patients in the UK
Gelhorn HL, Poon JL, Davies EW, Paczkowski R, Curtis SE, Boye KS
Published Date: 9 November 2015
Neuropsychological profile in a specific cohort of HIV patients infected postnatally: a cross-sectional study
Riva S, Cutica I, Pravettoni G
Published Date: 9 October 2015
Mutations in presenilin 2 and its implications in Alzheimer’s disease and other dementia-associated disorders
Cai Y, An SSA, Kim SY
Published Date: 14 July 2015
Droguett VS, Santos AC, Medeiros CE, Marques DP, Nascimento LS, Brasileiro-Santos MS
Published Date: 12 January 2015
Hyun MY, Jung YE, Kim MD, Kwak YS, Hong SC, Bahk WM, Yoon BH, Yoon HW, Yoo B
Published Date: 13 May 2014
Sato M, Yasuhara Y, Tanioka T, Iwasa Y, Miyake M, Yasui T, Tomotake M, Kobayashi H, Locsin RC
Published Date: 17 January 2014
Comparison of high-resolution Scheimpflug and high-frequency ultrasound biomicroscopy to anterior-segment OCT corneal thickness measurements
Kanellopoulos AJ, Asimellis G
Published Date: 20 November 2013
Weber A, Remky A, Bienert M, Huber-van der Velden K, Kirschkamp T, Rennings C, Roessler G, Plange N
Published Date: 19 August 2013
Aref AA, Sayyad FE, Ayres B, Lee RK
Published Date: 11 February 2013