The aim of this work is to study the effects produced by 1 incision and paired incisions in corneal aberrations after cataract surgery. W e selected 21 eyes of 18 patients aged between 44 and 89 years (69,81 ± 12.55). Aberrations were measured by corneal topographer Sirius 5 eyes with incisions paired (3 mm) and 16 eyes 1 corneal incision (2.2 mm) . Data of topography, RMS values, and Zernike coefficients to 4th order were obtained a week before and 3 - 4 weeks after surgery for a pupil diameter of 6 mm. Corneal astigmatism was reduced with paired incisions (pre 0.94 ± 0.44 D, post 0.90 ± 0.48 D) (P =0.26) and increased with an incision (pre 1.2 9 ± 1.28 D, post 1.34 ± 1.45 D) (P = 0.77) Although differences were no statistically significant. The total RMS average increased with paired incisions (pre 1.16 ± 0.39 μm, post 1.24 ± 0.34 μm) (P = 0.46) and decreased with an incision (pre 1.76 ± 1.47 μm and post 1.54 ± 1.58 μm) (P = 0.91) after surgery. Higher order aberrations increased with paired incisions and decreased with 1 incision. The comma (pre 0.40 ± 0.19 μm, post 0.40 ± 0.30 μm) with paired incisions and spherical aberration (pre 0.31 ± 0.24 μm, post 0.31 ± 0.18 μm) with 1 incision showed no change post - surgical . These two types of incisions, although they induce changes after cataract surgery in aberrations corneal as clover, coma, astigmatism, tetrafoil, secondary astigmatism and spherical a berration, not impaired significantly the optical quality of the corneal surface.
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