What is the method of choice to evaluate PCO?

There is an extensive body of published data on interventions to reduce the incidence of posterior capsule opacification (PCO) after cataract surgery. Within the last decade, randomized controlled clinical trials have been used increasingly in this field of research. However, the main outcome measure, namely intensity of PCO, was only assessed indirectly in most trials. Surrogate parameters such as the rate of Nd-YAG capsulotomies were frequently used, which have their shortcomings due to several influencing variables such as patient demands and surgeon's decision making. The methods of PCO assessment can be sub…