Les implants toriques pour la prise en charge des patients atteits de cataracte

Abstract

Cataract is the leading cause of blindness in the world ahead of glaucoma and AMD. Previously, cataract surgery was primarily intended to remove the blinding opacification of the lens. Technological advances have emerged that cataract surgery has undergone major refinements over the past five years. However, despite the reduction in the size of the incision and the advent of foldable and injectable biomaterials which minimize the risk of induced astigmatism, the visual result remains limited by the persistence postoperatively of a cylindrical error pre-existing to surgery. . This obstacle could be circumvented by the use of intraocular implants with a toric design. Toric implants are nowadays more and more used during cataract surgery. They offer the possibility of effectively treating our patients with astigmatism during lens surgery. Our patient has a cataract with astigmatism. The management of this patient is based on a diagnosis, clinical examinations, complementary and a surgical intervention with a multifocal toric implant. The implant power is calculated from different empirical formulas, which depends on several parameters such as keratometry, axial length and depth of the anterior chamber. But for the calculation of a toric implant to be done by an online program. The toric pseudophakic implant achieved its goal of efficacy and safety for the correction of astigmatism at the same time as the phacoexceresis, demonstrating very good stability in the capsular bag. The larger the preoperative cylindrical component, the greater the benefit provided by the toric implant. Toric implantation in the posterior chamber as part of cataract surgery is an effective and safe technique to correct pre-existing corneal astigmatism. The misalignment of the toric IOL leads to a decrease in visual and refractive results. Future prospects combine an improvement in the method of ocular marking and a combination of the concepts of multifocality and toricite on a single implant.