Depth of Field–Enhancing Treatments With Micromonovision: Cornea Versus Lens-Based Approach
To compare the efficacy and safety of a corneal laser based vs. lens based approach for creating a greater depth of field combined with micromonovision for presbyopia correction.
Thirty consecutive patients were retrospectively analyzed for refractive/wavefront and topographic outcomes after presbyopia correcting treatments. They either underwent a depth of field enhancing presbyopia Lasik treatment with micromonovision aiming for -.75 to -1.25 in the near eye or a refractive lens exchange with a depth of field enhancing diffractive intraocular lens (DFE IOL) aiming for -.75 in the near eye. Any complications were recorded.
Nineteen patients underwent the LASIK based approach. Both groups had comparable parameters preoperatively. Both groups achieved a mean UCDVA of 20/16 and mean UCNVA of 20/20 without any surgical compilations. Dry eye parameters were noted in 8/19 patients with Lasik and 4/11 with refractive lensectomy at 6 months P>.03. Dysphotopsiae were present in 1/19 with Lasik and 1/11 with refractive lensectomy P>0.03. None of the Lasik patients but one of the refractive lensectomy patients experienced a posterior vitreous detachment and 3/11 complained of floaters P.03.
Both approaches appear effective for achieving spectacle independence. There might be a higher safety margin with the LASIK based approach.