Reproducibility of posterior capsule opacification measurement using Scheimpflug videophotography

Abstract

Purpose: To examine the intraobserver and interobserver reproducibility in measuring posterior capsule opacification (POO) using a Scheimpflug videophotography system. Setting: Hayashi Eye Hospital, Fukuoka, Japan. Method: Twenty eyes with PCO and 10 without PCO had 5 independent measurements 15 minutes apart performed by 3 observers. The eyes without PCO were selected within 1 week after surgery. Intraobserver and interobserver reproducibility were evaluated using the coefficient of variation and intraclass correlation coefficient. Results: The median coefficients of variation of the 3 observers were 11.6%, 11.3%, and 9.8%, respectively, which inditMes an acceptably low observer variability. The intraobserver correlation coefficients of the 3 observers were all more than 0.95, and the interobserver correlation coefficient was 0.976, which indicates excellent reproducibility. Conclusion: The results of intraobserver and interobserver reproducibility of PCO measurement using the Scheimpflug videophotography system indicate it would be effective for use in research and clinical management of PCO.