Extended Depth of Focus IOL and Modest Monovision
Narrative Responses:
Purpose
To compare the visual performance of patients who had an extended depth of focus (EDF)intraocular lens (IOL) implanted targeting modest monovision.
Methods
Patients undergoing cataract surgery implanted with an extended depth of focus intraocular lens with positive spherical aberration were targeted for emmetropia in both eyes or modest monovision (-1.25D). Binocular unaided visual acuity for distance, intermediate and near, stereo-acuity were compared in both groups.
Results
LogMAR unaided binocular visual acuities for distance, intermediate and near were -0.02, 0.06 and 0.3 in the emmetropic group (N=24) and -0.04, -0.04 and 0.2 in the monovision group (N=21), (p= 0.12, 0.001 and 0.02, respectively). Unaided stereo-acuity was found to be 68.7±57 seconds of arc with emmetropia and 72.6±64.8 with monovision (p=0.91).
Conclusion
Intermediate and near acuity was significantly improved in patients targeted for modest monovision with an EDF IOL compared to those patients targeted for distance acuity in both eyes. Stereo-acuity was not compromised with a modest amount of monocular myopic defocus and an extended depth of focus IOL.