Visual Outcomes of New Diffractive Multifocal Toric IOL
To evaluate the visual outcomes, rotational stability and satisfaction of patients submitted to cataract surgery with implantation of a diffractive multifocal toric IOL (Tecnis multifocal toric ZMT 150-400, Abbott Medical Optics, Inc.).
This prospective study included 60 eyes of 30 patients with cataract and regular corneal astigmatism submitted to phacoemulsification with bilateral implantation of Tecnis ZMT or Tecnis ZMT in one eye and ZMB (non-toric) in the contralateral eye. Over a 3-month follow-up period, the main outcome measures were uncorrected and corrected monocular and binocular distance (UDVA, DCVA), intermediate at 80 cm (UIVA, DCIVA) and near at 40 cm (UNVA, DCNVA) visual acuities (VA), spherical equivalent (SE) refraction, residual astigmatism, rotational stability (OPD-Scan III, Nidek), defocus curves, glare and no-glare contrast sensitivity (CSV-1000, VectorVision), presence of photic phenomena and use of spectacles.
Monocular results of 30 eyes (one eye per patient implanted with the Toric Multifocal) at 3 months showed mean UDVA of 0.06 ± 0.07 LogMAR, mean UIVA of 0.19 ± 0.08 LogMAR and mean UNVA of 0.02 ± 0.08 LogMAR. Refractive predictability was excellent with a mean SE of 0.06 ± 0.35 D. Mean rotation was 3.18 ± 3.28º. Photic phenomena were minimal or moderate in 26 (87%) of patients, with no complaints of overwhelming trouble. All patients were spectacle independent.
The implantation of the Tecnis Multifocal Toric IOL in patients with cataract and corneal astigmatism provided excellent distance and near VAs with good intermediate VA. Predictability of refractive results, rotational stability and optical performance were excellent, allowing all patients in this series to achieve complete spectacle independence.