Inlay with Profocal Power Profile Can Significantly Improve Uncorrected near Vision

With the aging of the population worldwide, there is increased interest in surgical correction of presbyopia among our patients. To that end, in recent years several models of intrastromal corneal inlays have been introduced to the market with the purpose of providing those patients with clear crystalline lenses the opportunity to achieve better UNVA without diminishing distance vision. Each of these devices uses a different mechanism of action: • The pinhole mechanism of the Kamra inlay (AcuFocus) provides increased depth of field and improves intermediate and near vision; • With its different index of refraction from the cornea, the Flexivue Microlens (Presbyia) aims to create a multifocal effect, with zones for near and distance vision; and • By reshaping the central cornea, the Raindrop Near Vision Inlay (ReVision Optics) causes a steepening that produces a variation in power from center to periphery. This central rise is referred to as a profocal power profile. Each of these inlays can be suitable for emmetropic as well as ametropic eyes. In ametropic eyes, implantation of the inlay is combined with LASIK.