Agreement between Orbscan II, VuMAX UBM and Artemis-2 very-high frequency ultrasound scanner for measurement of anterior chamber depth

Table 3 Overview of recent studies comparing the repeatability of different instruments for measuring anterior chamber depth (ACD)

Author (year)	Instruments	Parameter	Mean age ± SD	Spherical equivalent range	Agreement between results?^‡
Lee et al. (2007) [7]	Orbscan II* vs UBM^**	ACD	44.25	-5.50 to + 3.00 D	No
Hashemi et al. (2005) [30]	Orbscan I* vs USP^†	ACD	30.2 ± 8.5	-15.00 to - 1.00 D	No
Chaidaroon and Jengialern (2005) [31]	Orbscan I* vs IOL Master*	ACD	27.90 ± 8.80	-8.49 ± 4.00 D	No

SD, standard deviation; UBM, ultrasound biomicroscopy; USP, ultrasound probe.
*Optical non-contact.
**Ultrasound immersion.
^†Ultrasound contact.
^‡In all studies the difference between instruments was statistically significant.

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