One hundred sixty-two players (316 eyes) were evaluated. The HOAs were less than 0.026 μm in all cases. Spherical aberration C(4,0) was the largest aberration with both aberrometers. There were small but statistically significant differences between the aberrometers in mean values for trefoil C(3,3) and C(3,?3) and secondary astigmatism C(4,2). Although statistically significant, the differences were clinically insignificant, being similar at approximately 0.031 diopter (D) of spherical power. A statistically significant difference was found between the professional baseball players and the control population in trefoil C(3,?3). These differences were clinically insignificant, similar to 0.071 D of spherical power.
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