Anterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner

Figures & data

Figure 1 The image was obtained for one of the subjects with Artemis-2 VHFUS for ACA and ACD. A black and white, and B in color.

Abbreviations: VHFUS, very high frequency ultrasound scanner; ACA, anterior chamber angle; ACD, anterior chamber depth.

Figure 2 The image was obtained for the same subject but with UBM for ACA and ACD. A black and white, and B in color.

Abbreviations: UBM, ultrasound biomicroscopy; ACA, anterior chamber angle; ACD, anterior chamber depth.

Figure 3 Bland–Altman diagram showing the difference and agreement limits of the ACA measurements obtained with UBM and the Artemis-2 VHFUS.

Abbreviations: ACA, anterior chamber angle; UBM, ultrasound biomicroscopy; VHFUS, very high frequency ultrasound scanner.

Figure 4 Bland–Altman diagram showing the difference and agreement limits of the ACD measurements obtained with the UBM and Artemis-2 VHFUS.

Abbreviations: ACD, anterior chamber depth; UBM, ultrasound biomicroscopy; VHFUS, very high frequency ultrasound; SD, standard deviation.

Table 1 The mean ± SD, mean differences ± SD, and LOA of ACA and ACD measurements with UBM and the Artemis-2 VHFUS

	UBM	Artemis-2 VHFUS	Mean difference	LOA
ACA (degree)	41.83 ± 5.03	33.36 ± 6.03	8.50 ± 2.50	13.30/3.60
ACD (mm)	2.96 ± 0.34	2.87 ± 0.31	0.09 ± 0.27	0.61/−0.43

Abbreviations: SD, standard deviation; LOA, limits of agreement; ACA, anterior chamber angle; ACD, anterior chamber depth; UBM, ultrasound biomicroscopy; VHFUS, very high frequency ultrasound scanner.