Binocular function after bilateral implantation of monofocal and refractive multifocal intraocular lenses

Purpose: To evaluate binocular function after bilateral implantation of a r efractive multifocal intraocular lens (IOL). Methods:Contrast sensitivity, glare, depth discrimination, and distance and , near visual acuity were examined in 21 patients with a multifocal IOL and 15 patients with a monofocal IOL. Results: There was no significant difference in binocular distance visual a cuity between the 2 groups. In near visual acuity with distance correction, the multifocal group had a significant advantage in monocular and binocula r vision (P < .05). High contrast with Regan contrast letter acuity charts did not differ significantly between the groups. However, at a contrast of 11%, sensitivity was significantly lower monocularly in the multifocal grou p. Contrast sensitivity in this group was not significantly lower binocular ly. The brightness acuity tester revealed no between group difference in gl are. With the Titmus stereotest, depth discrimination was significantly bet ter with the multifocal IOL with distance correction. Conclusion: Bilateral implantation of a refractive multifocal IOL-provided: good binocular function and alleviated the well-known disadvantage of reduc ed contrast I sensitivity at low contrast levels.