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Reproducibility of posterior capsule opacification measurement using Scheimpflug videophotography
Purpose:
To examine the intraobserver and interobserver reproducibility in measuring posterior capsule opacification (PCO) 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 indicates 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.