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B. Perez, C. Orlich, D.S. Reyes, C.F. Velasco, J. Ozorno; A Compative Study: Orbscan II vs. Ultrasound Biomicroscopy as a Method to Assess the Anterior Chamber Depth . Invest. Ophthalmol. Vis. Sci. 2003;44(13):2579.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: Evaluate the accuracy and reliability of the optic method (Orbscan II) and compare it with the ultrasound method (ultrasound microscopy) as a method to assess the anterior chamber depth in patients who ask for refractive surgery Methods: A prospective, comparative and descriptive study. We measured the anterior chamber depth in 36 eyes of 20 patients (mean age 32.02) using the Orbscan II topography system (Orbtek, Inc.) and the ultrasound biomicroscope P40 (Humphrey instruments, Inc.) Results: Mean anterior chamber depth values measured with the Orbscan system were 3.06 ± 0.26 mm; ultrasound system measurements were 3.09 ± 0.26 mm. The correlation coefficient between the Orbscan and ultrasound systems was 0.98 Conclusions: There is a good correlation between the Orbscan II and ultrasound biomicroscope measures of the anterior chamber depth. There no exist a significant difference between the optic and ultrasound methods to assess the anterior chamber depth. The Orbscan II topography system provide an accuracy and reliable measure of the anterior chamber depth
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