Official ESCRS | European Society of Cataract & Refractive Surgeons


Near visual acuity and reading performance with low add bifocal and extended-depth-of-focus intraocular lenses implanted with mini-monovision

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Session Details

Session Title: Extended-Depth-Of-Focus IOLs II

Session Date/Time: Monday 16/09/2019 | 14:00-16:00

Paper Time: 15:30

Venue: Free Paper Forum: Podium 1

First Author: : S. Akkaya Turhan TURKEY

Co Author(s): :    M. Sevik    E. Toker                          

Abstract Details


To evaluate near visual acuity, reading performance, preferred reading distance and spectacle independence in patients implanted with a low add multifocal or an extended depth of focus (EDOF) intraocular lens (IOL) after phacoemulsification.


Cornea and Cataract Unit, Department of Ophthalmology, Marmara University School of Medicine, Turkey.


In this prospective, randomized, single-center study, patients undergoing phacoemulsification surgery were randomized to receive the diffractive multifocal Tecnis +2.75 D (ZKB00) IOL (Tecnis +2.75 group; 15 patients) or the EDOF Tecnis Symfony (ZXR00) IOL (Symfony group; 14 patients) for bilateral implantation with mini-monovision. Patients were evaluated preoperatively and postoperatively at 1st, 3rd and 6th months. Monocular and binocular distance-corrected and uncorrected near (DCNVA, UNVA) visual acuity at 40 cm, reading performance parameters (reading acuity, critical print size and maximum reading speed) evaluated with MNREAD acuity charts, preferred reading distance and spectacle needs at near activities were assessed.


At 6 months postoperatively, binocular logMAR UNVA and DCNVA were significantly better in the Symfony group than the Tecnis +2.75 group (UNVA: 0.15±0.07 vs 0.22±0.08, p=0.046; DCNVA: 0.21±0.05 vs 0.28±0.07, p=0.043; respectively). There was no significant difference in reading performance parameters between the groups, however, Symfony group preferred significantly closer reading distance than the Tecnis +2.75 group (42.00±4.67cm; 45.87±5.32cm, respectively, p=0.030). At postoperative 6th month, 14.3% and 26.7% of patients reported that they needed spectacles, rarely or occasionally, for near activities in the Symfony and Tecnis +2.75 groups, respectively (p>0.05).


When implanted with mini-monovision, while functional near visual acuity and high degree of spectacle independence at near distances were achieved with both IOLs, patients implanted with the EDOF IOL preferred closer reading distance than those implanted with the low add diffractive multifocal IOL.

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