Comparison of new monofocal innovative and standard monofocal intraocular lens after phacoemulsification

Purpose: To evaluate the early findings of new monofocal intraocular lens (Tecnis^® Eyhance) in comparison with standard monofocal intraocular lens (Tecnis^® 1-piece) in patients who underwent cataract surgery.

Methods: Sixty-four eyes of thirty-two patients (each intraocular lens model was implanted bilaterally in 16 patients) were included in this retrospective study. Preoperative and postoperative (at one month) manifest refraction, spherical equivalent (SE) values, monocular and binocular uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), uncorrected intermediate visual acuity (UCIVA), distance-corrected intermediate visual acuity (DCIVA), distance-corrected near visual acuity (DCNVA), binocular defocus curve, photopic contrast-sensitivity, spectacle independence, photic phenomena, tolerance to residual refractive errors and complications were recorded.

Results: The mean monocular postoperative UDVA, CDVA, DCNVA, spherical equivalent and cylinder values were comparable between each group (p > 0.05). Monocular and binocular DCIVA and UCIVA were significantly higher in Tecnis^® Eyhance group than Tecnis^® 1-piece group (p = 0.033, p = 0.038, respectively). No statistically significant difference was detected between groups regarding the photopic contrast sensitivities for any spatial frequency (p > 0.05). Spectacle independence was significantly higher in Tecnis^® Eyhance group than Tecnis^® 1-piece group. Tecnis^® Eyhance IOL revealed a good tolerance to unexpected residual refractive errors than Tecnis^® 1-piece IOL.

Conclusion: Tecnis^® Eyhance appears to be an effective option for both patients and surgeons regarding better intermediate visual acuities and more forgiving for residual refractive errors relative to the standard monofocal intraocular lenses. However, longer follow-up studies with larger group of patients are needed to evaluate the effectiveness of Tecnis^® Eyhance intraocular lens.