The laser interferometer in predicting efficacy of secondary posterior capsulotomy.

Twenty eyes with posterior chamber intraocular lens implants that required secondary capsulotomies were evaluated with the laser interferometer. The interferometric measured preoperative retinal acuity is a good indication as to what the postoperative Snellen visual acuity can be after capsulotomy. Preoperative retinal visual acuity testing is also valuable in helping to decide when a capsulotomy is indicated.