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Iridiocorneal angle widens after phaco in nonglaucomatous eyes

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Eyes without glaucoma that undergo uneventful phacoemulsification may benefit from reduced IOP, increased anterior chamber depth and a widened iridocorneal angle, according to a Turkish study.

Cigdem Altan, MD, and colleagues at the Beyoglu Eye Education and Research Hospital in Istanbul studied 53 eyes of 49 patients 6 months postoperatively after uneventful phaco and IOL implantation. They compared pre- and postop IOP, anterior chamber depth and iridocorneal angle width to determine if any relationships existed. None of the eyes had glaucoma preoperatively.

Preoperatively, the mean IOP was 15.1 mm Hg, which fell to 13.4 mm Hg at day 1 postop and 13.3 mm Hg at 1 week, but had risen back to 14.1 mm Hg at 6 months. This was found to be statistically significant (P < .05). The mean preoperative iridocorneal angle grade of 2.97 increased to 3.68 at 1 month, which was also statistically significant (P < .05). The mean preop anterior chamber depth was 3.06 mm, which increased to 3.7 mm at 3 months (P < .05).

The researchers said the IOP decrease was not related to changes in the iridocorneal angle width or anterior chamber depth.

The study is published in the April issue of Journal of Cataract & Refractive Surgery.