Abstract
A prospective, randomized, double-masked clinical trial of 182 patients compared the frequency of visual disturbances associated with two small incision intraocular lenses (IOLs): the Alcon MZ20BD 5 mm × 6 mm oval-optic poly(methyl methacrylate) (PMMA) IOL and the STAAR AQ1016 round-optic silicone IOL. The samples were similar at baseline. There were no significant differences in visual acuity, mean keratometric cylinder, or surgically induced cylinder between the two groups postoperatively. Patients completed a satisfaction questionnaire and visual symptom inventory of ten items three months postoperatively. Those with the oval-optic PMMA IOL reported significantly more visual symptoms than those with the roundoptic silicone IOL (P = .03). The oval-optic group reported three symptoms more frequently: reflections, halos or rings around lights, and objects at arm's length appearing blurry (P ≤ .010). The status of the fellow eye (cataract or pseudophakic) did not differ by randomization group, and the distribution of visual symptoms did not differ by status of the fellow eye. Frequency and severity of visual complaints were modest overall; only 1 % in each group was unsatisfied with the visual results.
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