New Diffractive Depth of Field–Enhancing Presbyopia-Correcting IOL: Early Results
Purpose
To evaluate the efficacy and side effects of a novel diffractive depth of field enhancing presbyopia correcting intraocular lens (DFE IOL) vs. a diffractive multifocal intraocular lens (MFIOL)
Methods
24 patients were randomized to either group. Preoperative and postoperative topography/refraction/endothelial cell counts/macular OCT/IOL master measurements/ocular guidance and wavefronts were obtained.
Phacoemulsification surgeries were carried out using an ocular guidance system for IOL and incision placement and a visual axis identification for placement of the IOL.
The diffractive MFIOL group aimed for +.1 to +.25 in the distance eye and the diffractive DFE IOL group for -.5 to -.75 in the near eye.
Complications and postoperative symptoms were recorded.
Results
13 patients were randomized to the diffractive MFIOL group. There were no significant differences in parameters between the groups preoperatively.
At 3 months both groups had a mean UCDVA of 20/18. The diffractive MFIOL group had a mean UCNVA of 20/18 vs. an UCNVA of 20/22 in the diffractive DFE IOL group. The mean intermediate vision was 20/30 in the diffractive MFIOL group vs. 20/20 in the diffractive DFE group P 0.03.
8/13 in the diffractive MFIOL group had dysphotopsiae at 3 months vs. 1/11 in the diffractive DFE IOL group P<0.01.
Conclusion
The novel diffractive DFE IOL appears to produce a good range of vision and a possible reduction in dysphotopsiae.