To compare visual outcomes, contrast sensitivity, optical quality, spectacle independence and visual disturbances in patients implanted with two models of monofocal intraocular lenses (IOLs).
Eye Clinic, NEUROFARBA department, University of Florence, Italy DESIGN:: Prospective case series METHODS:: Patients without ocular comorbidities and corneal astigmatism <0.75 D underwent cataract surgery with bilateral implantation of two monofocal IOLs: the Tecnis ZCB00 IOL or the Tecnis Eyhance ICB00 IOL (Johnson & Johnson Vision, Santa Ana, CA, USA). Six months after surgery monocular and binocular uncorrected and corrected distance (UDVA and CDVA at 4 m) visual acuities, uncorrected, distance-corrected and corrected intermediate (UIVA, DCIVA, CIVA at 66 cm) and near (UNVA, DCNVA, CNVA at 40 cm) visual acuities were measured. Photopic contrast sensitivity, binocular defocus curve, objective scatter index (OSI), Strehl Ratio, modulation transfer function (MTF) cut-off, halo and glare perception and spectacle independence were also evaluated.
Each group included 40 eyes of 20 patients. While monocular and binocular distance and near visual acuities were similar between groups, monocular and binocular UIVA were significantly higher in the Eyhance group. There were no significant differences between the two groups in terms of photopic contrast sensitivity, OSI, MTF cut-off, Strehl ratio, glare and halo perception. The ICB00 IOL gave better spectacle independence than the ZCB00 IOL for intermediate distance.
In patients without ocular comorbidities the Eyhance ICB00 IOL gave better intermediate uncorrected visual acuity and higher intermediate spectacle independence without impairment of far vision and visual quality, compared to the ZCB00 IOL.