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I. H. Chan, S. K. Dorairaj, T. S. Prata, J. Panarelli, P. A. Sidoti, R. Ritch; A Semi-Automatic Linear Regression-Based Method to Measure the Ciliary Body-Sclera Angle in Ultrasound Biomicroscopy Images. Invest. Ophthalmol. Vis. Sci. 2010;51(13):5533.
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© ARVO (1962-2015); The Authors (2016-present)
To measure the ciliary body-sclera angle (CBSA) in UBM.
Morphological structure element is used for image segmentation of angle structures. The inner corneal border and anterior border of the ciliary body are linearly fitted. The angle formed by the 2 intersecting lines is defined as CBSA. 3 observers measure the CBSA in 20 UBM images each 3 times. Intra-class correlation coefficient (ICC) is used to measure intra- and inter-observer variability.
CBSA Mean (STD) = 56.27 (16.04) deg. ICC(agreement) = 0.9984. ICC(consistency) = 0.9986.
This semi-automatic linear-regression based measurement of CBSA in UBM achieves excellent inter- and intra-observer agreement. This method can consistently evaluate the ciliary body morphology.
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