Take-home: Trifocal IOLs can provide good uncorrected vision at near, intermediate, and far. Outcomes in a series of 30 patients show that a toric version of a trifocal IOL (AT Lisa tri 939MP, Carl Zeiss Meditec) delivers those benefits for patients with > 1 D of corneal astigmatism.
Braga, Portugal—A proprietary toric trifocal IOL (AT Lisa tri 939MP, Carl Zeiss Meditec) may be considered a first-line option to meet the needs of patients with significant pre-existing corneal astigmatism who are interested in refractive lensectomy for presbyopia correction, according to Rui Carneiro de Freitas, MD.
His conclusion was based on the findings of a prospective study that analyzed outcomes from 30 patients who underwent bilateral implantation with the toric trifocal IOL. Refractive results, including astigmatic correction, and uncorrected and distance corrected visual acuity (UCVA and DCVA) measured at near, intermediate, and far were excellent.
In addition, the vast majority of patients (85%) were spectacle-free at all distances, and those needing glasses only wore them for some near vision tasks. Contrast sensitivity function was within age-related normal limits at all spatial frequencies under both photopic and mesopic conditions, and it was not significantly different compared to eyes implanted with a monofocal IOL, reported Dr. Carneiro de Freitas, department of ophthalmology, Hospital Braga, Braga, Portugal.