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Multifocal intraocular lens implantation in patients with presenile unilateral primary and secondary cataract.

Multifocal intraocular lens implantation was studied in 6 eyes with a unilateral cataract due to ocular trauma. Two patients had an uncomplicated traumatic cataract, two patients had a complicated traumatic cataract and two patients had a unilateral primary presenile cataract. Postoperative visual acuity for distance and for near vision, with and without additional spectacle correction, as well as the presence of postoperative binocular vision was evaluated. Additionally, we looked for pre- and postoperative parameters, assuming these criteria determine the success ratio of a multifocal intraocular lens implantation: presence of a stereoscopic vision pre-operatively, or absence of a pre-operative strabismus; rather good visual prognosis (no retinal damage in the traumatic cases and no amblyopia in the primary cases); normal functioning of the pupillary sphincter.