Objective. To evaluate the postoperative visual quality of cataract patients with extreme myopia after implantation of aspheric intraocular lenses (IOLs). Methods. Thirty-three eyes were enrolled in this prospectivestudy. Eighteen eyes with an axial length longer than 28 mm were included in the extreme myopia group, and the other 15 eyes were included in the nonextreme myopia group. Phacoemulsification and aspheric IOL implantation were performed. Six months after cataract surgery, best-corrected visual acuity (BCVA), contrast sensitivity, and wavefront aberrations were measured, and subjective visual quality was assessed. Results. The BCVA improved significantly after surgery for both groups, and patients in the nonextreme myopia group achieved better postoperative BCVA due to better retinal status of the eyes. The evaluation of contrast sensitivity without glare was the same in both groups, whereas patients in the nonextreme myopia group performed better at intermediate spatial frequencies under glare conditions. The two groups did not show a significant difference in high-order aberrations. With regard to subjective visual quality, the composite scores of both groups did not differ significantly. Conclusions. Aspheric IOLs provided good visual outcomes in cataract patients with extreme myopia. These patients should undergo careful evaluation to determine the maculopathy severity level before surgery. 1. Introduction The spherical aberration of the cornea is positive and that of the lens is negative in the young, healthy eye, and these differences have a compensatory relationship [1, 2]. Decreased optical quality occurs in the aging eye as the spherical aberration of the lens becomes gradually positive and thus loses its ability to compensate for the corneal aberration, which changes little with increasing age [1–5]. Conventional spherical intraocular lenses (IOLs) act as an aging lens in which positive spherical aberration cannot compensate for the corneal aberration. Aspheric IOLs can decrease the total amount of ocular spherical aberration after cataract surgery due to their introduction of negative spherical aberration. It has been shown that aspheric aberration-correcting IOLs effectively reduce ocular aberration and improve contrast sensitivity in patients with age-related cataracts [6–15]. However, little is known about the safety and effectiveness of aspheric IOLs in patients with extreme myopia. Therefore, we performed the current study to evaluate the clinical effects of aspheric IOL implantation in cataract patients with extreme myopia by
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