Near add power of the diffractive multifocal intraocular lens

To assess near visual acuity and patient satisfaction with the 3M diffractive multifocal intraocular lens (IOL).

Asan Medical Center, Ulsan University, Seoul, Korea.

Near acuity of 50 eyes implanted with the diffractive multifocal IOL was evaluated postoperatively. Near visual acuity was measured with best distance correction at 33 cm and then at each patient's preferred distance with an extra add of -0.25, +0.25, +0.50, or +0.75 D to the best distance correction. Mean follow-up was 11 months.

All eyes obtained a near vision of J3 or better with the best distance correction and 34 (68.0%) obtained J1 or better. Extra add power increased near vision and was preferred in 44 eyes (88.0%) even though the reading distance was shortened.

We recommend adding more than +3.5 D to the 3M multifocal IOL.