Early Outcomes With 3-Piece 3-Zone Refractive Multifocal IOL
Purpose
To evaluate early outcomes with a new refractive multifocal intraocular lens (mIOL) which was available from 2012 in Japan. The mIOL is a 3-piece 3-zone refractive lens with 3 D of near addition (iSert PY60MV, HOYA Surgical Optics, Inc.).
Methods
The subjects were patients who had been operated on with cataract surgery at the Department of Ophthalmology, Jikei University School of Medicine, Tokyo. The analyses were conducted on 8 eyes in 7 patients (age 36 ± 9.6 years old). All of the eyes were operated on with co-axial phacoemulsification and aspiration, and inserted with the refractive mIOL. To evaluate early outcomes of the mIOL retrospectively, we measured uncorrected decimal visual acuity at far (5 meter), middle (50 cm) and near distance (30 cm) at 3 months post-operation. Further, we also examined contrast sensitivities at far distance with CGT-1000 (TAKAGI) and defocus curves.
Results
The mean uncorrected visual acuity at 3 months post-operation were 1.18 (far), 0.70 (middle) and 0.83 (near). There were no intraoperative or postoperative complications. Contrast sensitivities both with and without a bright backlight at all spatial frequencies were within the normal range. In the average defocus curve, there were two peaks at 0 and -2.5 diopter. The lowest visual acuity between the two peaks was 0.633 at -1.5 diopter. However, there was no significant difference between visual acuity at -1.5 and -2.5 diopter.
Conclusion
We evaluated the early outcomes of a refractive mIOL insertion with iSert PY60MV. The patients with the mIOL had sufficient visual function for daily life at a wide range of distances.