Anterior Chamber Cell Grading by Optical Coherence Tomography

作者:Li Yan; Lowder Careen; Zhang Xinbo; Huang David*
来源:INVESTIGATIVE OPHTHALMOLOGY %26 VISUAL SCIENCE, 2013, 54(1): 258-265.
DOI:10.1167/iovs.12-10477

摘要

PURPOSE. To quantify cells in the ocular anterior chamber (AC) by optical coherence tomography (OCT). %26lt;br%26gt;METHODS. A time-domain anterior segment OCT system was used to image latex microsphere suspensions in vitro and the AC of uveitis and normal subjects in vivo. The OCT scan pattern, consisting of 2- and 4-mm-diameter concentric circular scans, was divided into central, superior, and inferior regions. A computer algorithm was developed to automatically identify particles in OCT images. A uveitis specialist used slit-lamp biomicroscopy to grade the AC cells on a scale of 0 to 4+. %26lt;br%26gt;RESULTS. Latex microspheres and AC cells were visualized as reflective spots in OCT images. OCT latex microsphere concentration measurements were highly correlated to known particle concentrations (r = 1.000) and had an efficiency of 0.72. In 30 nongranulomatous and 12 granulomatous eyes, the OCT cell counts correlated well with slit-lamp grades in all three regions (Spearman%26apos;s rho coefficient: %26gt;0.63). The average OCT cell count was 3.7 cells/grade in nongranulomatous eyes and 2.0 cells/grade in granulomatous eyes. OCT revealed significant amounts of inferior AC cells in 5 of 16 quiescent uveitis eyes (mean +/- SD: 19.9 +/- 7.4 cells). OCT captured rare cells in normal eyes (1.1 +/- 1.1 cells centrally). %26lt;br%26gt;CONCLUSIONS. OCT provided quantitative information on AC inflammatory cells. The OCT cell counts correlated well with clinical grading, and particles in the inferior AC that were missed by slit-lamp examination were detected by OCT. OCT could be a valuable tool for the diagnosis and management of anterior uveitis. (Invest Ophthalmol Vis Sci. 2013; 54: 258-265) DOI: 10.1167/iovs.12-10477

  • 出版日期2013-1