A PROSPECTIVE COMPARISON OF 2 MULTIFOCAL LENS MODELS

Background: The functional results of two different types of multifoca l intraocular lenses (based on the diffractive and refractive principl e, respectively) were investigated prospectively. Materials and method s: Altogether 50 patients who had a multifocal lens implanted were exa mined 4-6 weeks postoperatively. Visual acuity for distance and near v ision, contrast sensivity, low contrast visual acuity and glare visual acuity were investigated. Results: Distance visual acuity, contrast s ensitivity, low contrast visual acuity and glare visual acuity did not show significantly different results. Near visual acuity was statisti cally significantly better with the diffractive type of multifocal len s (because of a stronger adjustment for near vision). When the focus d epth was tested by defocus curves, both lenses had better results with in different areas of defocus. Conclusions: All patients in both group s showed satisfactory results. When choosing a multifocal intraocular lens, the individual needs of each patient should be taken into consid eration.