July 10, 2013
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Femtosecond intrastromal relaxing incisions improve astigmatism, visual acuity

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Femtosecond laser-assisted intrastromal relaxing incisions reduced astigmatism while significantly improving corrected distance visual acuity, a study found.

The study included 16 eyes of 16 patients who had astigmatism after penetrating keratoplasty and underwent femtosecond laser-assisted relaxing incisions.

LogMAR corrected distance visual acuity improved from 0.50 to 0.32 (P = .016), refractive cylinder decreased from 6.8 D to 3.7 D (P = .001), topographic anterior cylinder decreased from 9.5 D to 4.4 D (P = .001), and topographic posterior cylinder decreased from 1.38 D to 0.71 D (P = .002).

The anterior side cut angles were 90° or 120°, and similar results were observed with both cuts.

A bulge in the incision developed in one eye and was treated with compression sutures. No infections were reported, and no complaints of discomfort were noted.