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MICS induces fewer corneal changes than SICS

J Cataract Refract Surg. 2009;35(2):233-239.

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Coaxial microincision cataract surgery induced less corneal astigmatism, corneal flattening and corneal surface irregularity than coaxial small-incision cataract surgery.

The study included 120 eyes of 60 patients who had a mean age of 70.1 years. Patients were randomized to undergo microincision cataract surgery (MICS) in one eye and small-incision cataract surgery (SICS) in the contralateral eye.

All patients underwent keratometric and videokeratographic examination before surgery, 2 days after surgery, and 1, 2, 4 and 8 weeks after surgery.

Mean induced astigmatic change was significantly lower in the MICS group than in the SICS group at 1 week and all subsequent follow-up intervals. Corneal flattening and steepening were significantly less in the MICS group than in the SICS group. Higher-order corneal irregularity was significantly lower in the MICS group than in the SICS group up to 2 weeks, but the difference was not statistically significant at 4 weeks or 8 weeks.

No statistically significant differences in mean visual acuity were observed at any follow-up points.