Clinical evaluation of a 5.5 mm three-zone refractive multifocal intraocular lens

To evaluate the results of implanting the P359-TUV 5.5 mm three-zone refractive multifocal intraocular lens (IOL).

Musashino Red Cross Hospital, Tokyo, Japan.

The lens was implanted in 29 eyes of 19 patients who were followed for a mean of 13.5 months. Distance visual acuity (DVA), near visual acuity (NVA), and contrast sensitivity were measured postoperatively.

Ninety-three percent of eyes obtained 20/20 or better DVA with correction and J1 or better NVA with correction. Seventy-nine percent obtained J1 or better NVA with distance correction and 93% obtained J3 or better. Postoperative astigmatism was easier to control than with the former large model multifocal IOL. In almost all cases, good DVA and NVA could be obtained without correction and the cases that did not need spectacle correction increased. In unilaterally implanted cases, contrast sensitivity was slightly less in eyes with multifocal IOLs than in eyes with monofocal IOLs. In bilaterally implanted cases, there was no significant difference in contrast sensitivity between the multifocal and monofocal eyes.

The small model P359-TUV lens is an effective multifocal lens, especially when implanted bilaterally.