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PCO may alter visual field results

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The presence of posterior capsular opacification may alter visual field results and may simulate other ocular pathologies, according to researchers. They suggest its presence be considered in the interpretation of any automated perimetry in pseudophakic patients.

José J. García-Medina and colleagues at University Hospital in Valencia, Spain, performed Humphrey SITA tests in 26 eyes of 26 patients with posterior capsular opacification (PCO). Tests were given immediately before Nd:YAG capsulotomy and between 1 and 8 weeks after surgery. Best corrected visual acuity (BCVA), IOP and global perimetric pre- and post-laser indices were compared.

BCVA, mean deviation and pattern standard deviation improved after capsulotomy, researchers said. They also noted a “strong association” between BCVA, mean deviation and pattern standard deviation before and after capsulotomy, suggesting that the values obtained before capsulotomy may predict those obtained after the procedure.

This study appeared in the May issue of Eye.