Reproducibility of posterior capsule opacification measurement using Scheimpflug videophotography

J Cataract Refract Surg. 1998 Dec;24(12):1632-5. doi: 10.1016/s0886-3350(98)80355-6.


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.

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Cataract / diagnosis*
  • Cataract / etiology
  • Diagnostic Techniques, Ophthalmological*
  • Female
  • Humans
  • Lens Capsule, Crystalline / pathology*
  • Lens Implantation, Intraocular
  • Male
  • Middle Aged
  • Observer Variation
  • Phacoemulsification / adverse effects
  • Photography
  • Reproducibility of Results
  • Video Recording