Assessment of anterior capsule opacification: photographic technique and quantification

J Cataract Refract Surg. 2002 Feb;28(2):271-5. doi: 10.1016/s0886-3350(01)01273-1.


Purpose: To develop and evaluate a standardized slitlamp photographic technique to document and quantify anterior capsule opacification (ACO) in the pseudophakic eye.

Setting: University of Vienna, Medical School, Department of Ophthalmology, Vienna, Austria.

Methods: In this prospective study, slitlamp photographs were taken in 29 eyes of 19 patients with ACO of varying degrees and intraocular lenses of different materials. Digital slitlamp photographs were taken by 2 examiners using a standardized protocol. The intensity of anterior fibrosis was evaluated using subjective grading by 2 masked examiners and by image analysis.

Results: A standardized protocol was developed for documentation of ACO. The intraexaminer (or short-term) reproducibility (r = 0.96, P < .01) and interexaminer reproducibility (r = 0.93, P < .01) were excellent. The results of image analysis used to objectively quantify ACO correlated with the subjective grading (r = 0.95, P < .01).

Conclusion: This standardized technique of slitlamp photography and image analysis provided reproducible documentation and can therefore serve as a basis for the quantification of ACO.

MeSH terms

  • Anterior Chamber
  • Cataract / diagnosis*
  • Fibrosis / diagnosis
  • Humans
  • Image Processing, Computer-Assisted / methods
  • Lens Capsule, Crystalline / pathology*
  • Lens Implantation, Intraocular
  • Lenses, Intraocular
  • Observer Variation
  • Phacoemulsification
  • Photography / methods*
  • Postoperative Complications / diagnosis*
  • Prospective Studies
  • Pseudophakia / complications
  • Reproducibility of Results