Visual performance of a new Extended Depth of Focus (EDOF) intraocular lens: Preliminary results

Abstract

To evaluate visual outcomes at 3 months after bilateral implantation of a new EDOF intraocular lens in a routine cataract population. Prospective evaluation of 12 patients (24 eyes) implanted bilaterally with an EDOF intraocular lens (IOL) with emmetropia as the target. Visual acuity at distance, intermediate (70cm) and near (40cm) with and without distance correction, refractive error, monocular photopic defocus curve and contrast sensitivity curve with best corrected distance refraction were measured. Subjective outcomes in terms of visual function, spectacle independence, lighting independence, dysphotopsia and overall satisfaction were assessed at three months. The mean age of the patients was 68.33 years±10.30. The mean IOL power was 21.5±2.44D. Three months after surgery, the mean decimal uncorrected distance (UCDVA), intermediate (UCIVA) and near (UCNVA) visual acuities were 0.10, 0.09 and 0.23 logMAR respectively. The monocular defocus curve with distance correction showed 1.75D of depth of field with an acuity better than 0.3 logMAR. Patient satisfaction was high, with a low occurrence of dysphotopsia. The A-constant should be optimized for better predictability. The EDOF IOL showed satisfactory visual performance after cataract surgery, with high patient satisfaction and a low occurrence of visual disturbances. It resulted in good distance and intermediate vision, but might require spectacles for small print at a near distance.