Comparative analysis of visual outcome with three intraocular lenses: monofocal, enhanced monofocal, and extended range of vision.

Abstract

PURPOSE\nTo compare the visual performance, spectacle independence and subjective visual quality of three intraocular lenses (IOLs): monofocal, enhanced monofocal, and extended range of vision.\n\n\nSETTING\nOphthalmology Department, San Raffaele Scientific Institute, Milan, Italy.\n\n\nDESIGN\nProspective case series.\n\n\nMETHODS\nWe included patients without ocular comorbidities and corneal astigmatism <0.75 diopters (D) undergoing cataract surgery with bilateral implantation of: monofocal Tecnis ZCB00, enhanced monofocal Eyhance ICB00, and extended range of vision Symfony ZXR00. Six months postoperatively we analyzed the following parameters: subjective and objective refraction; monocular and binocular corrected distance (4 m) and uncorrected distance visual acuity (UDVA); corrected distance, intermediate (66 cm) and near (40 cm) visual acuity, as well as uncorrected intermediate (UIVA) and uncorrected near (UNVA) visual acuity; photopic contrast sensitivity, binocular defocus curve; halo and glare perception; spectacle independence.\n\n\nRESULTS\nWe evaluated 150 eyes of 75 patients (25 patients per IOL group). Monocular and binocular UDVA was excellent in all three groups. Eyhance achieved binocular UIVA similar to that of Symfony, the latter showing the highest binocular UNVA. The defocus curves at -1 D were equivalent for both Eyhance and Symfony, whereas contrast sensitivity was similar in all three groups. The Eyhance spectacle independence score was comparable to Symfony s for intermediate-distance activities, the latter however achieving the worst results for halos and glare.\n\n\nCONCLUSIONS\nEnhanced monofocal Eyhance was not inferior to Symfony as regards intermediate-distance visual outcome and spectacle independence, also providing lower subjective perception of halos and glare.