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Toric extended depth of focus IOL improves binocular uncorrected near visual acuity

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Eric D. Donnenfeld

WASHINGTON — A nanovision strategy using extended depth of focus toric IOLs improved binocular near visual acuity in patients undergoing routine bilateral cataract surgery more than a plano strategy, according to a study presented here.

“Binocular near vision was better in the nanovision group. Nanovision, or –0.5 D of monovision in the nondominant eye, appears to improve near vision without decreasing vision at distance or intermediate in binocular vision studies,” Eric D. Donnenfeld, MD, said at the American Society of Cataract and Refractive Surgery annual meeting.

The prospective, multicenter, randomized study included 120 patients enrolled at four sites undergoing bilateral cataract surgery with implantation of a Symfony toric EDOF IOL (Johnson & Johnson Vision). Patients were targeted for either emmetropia, aiming for plano refractions for both eyes, or nanovision, aiming for –0.5 D in the nondominant eye, Donnenfeld said.

Visual acuity was assessed at 1 month and 3 months, with monocular and binocular assessed at 1 month and binocular only at 3 months.

Binocular uncorrected near visual acuity at 3 months was statistically significantly better in the nanovision group (P = .02), with an average of half a line difference, Donnenfeld said. There were no significant differences in binocular uncorrected distance visual acuity at 4 meters or intermediate visual acuity at 66 cm.

“This is the first study using a toric EDOF IOL; before, all studies have been on non-toric lenses. This is the first and only study that I know of looking at toric EDOF lenses. Binocular distance and intermediate vision was comparable between the two groups,” Donnenfeld said. – by Robert Linnehan

Reference:

Donnenfeld ED. Visual acuity outcomes post-implantation of an extended depth of focus (EDOF) toric IOL targeted for emmetropia or nanovision. Presented at: American Society of Cataract and Refractive Surgery annual meeting; April 13-17, 2018; Washington.

Disclosure: Donnenfeld reports he is a consultant for Johnson & Johnson Vision.