Intracorneal Ring Segments in Keratoconus; an Evidenced‐based Approach

Abstract

AbstractImplantation of intracorneal ring segments (ICRS) is an effective and safe surgical option for visual improvement in keratoconus. ICRS are small, PMMA devices, which are implanted into the cornea aiming to alter its geometry in a manner that it will enhance its refractive properties and thereby will improve visual acuity. Their implantation was initially managed mechanically, but over the last years femtosecond laser‐assisted implantation has been gaining increasing interest and is gradually replacing the conventional mechanical technique. Nowadays, there are implantation nomograms indicating the appropriate ring segment characteristics for each individual case and suggesting, in a customized manner, the most suitable parameters for ICRS implantation. There are also certain indications and contraindications regarding the patient selection in order to maximize the safety and efficacy of the treatment. The purpose of this presentation is to update the current status of ICRS implantation as a modern therapeutic option in the visual rehabilitation of patients with keratoconus, highlighting pearls and pitfalls for both young and experienced corneal surgeons.