PURPOSE To analyze the risk factors associated with a series of ectasia cases following photorefractive keratectomy (PRK) and all published cases. METHODS In a retrospective study on post-PRK ectasia patients, 9 eyes of 7 patients were included, in addition to 20 eyes of 13 patients from the literature. Risk of post-PRK ectasia was calculated using the ectasia risk score system (ERSS) for las...

Objective: to present corneal collagen corsslinking techniques. Corneal collagen cross-linking (CXL) is a procedure used to slow down or arrest the progression of keratoconus in order to avoid or, at least delay the necessity of keratoplasty. CXL means photopolimerisation of the stromal fibrillar tissue, in order to increase their stiffness and resistance to the corneal ectasia. CXL is a proces...

Copyright: © 2012 Makino S. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Abstract We report a case of severe acute corneal hydrops in a 32-year-old woman with keratoconus associated with Down syndrome. The ...

Objective: To assess sensitivity of corneal volume, asphericity, and D index in early diagnosis keratoconus. Methods: A cross-sectional analytical study, carried out between December 2018 October 2020, which analyzed the medical records 39 patients (78 eyes) diagnosed as keratoconus by a single specialist, using criteria Belin-Ambrosio Enhanced Ectasia Display. The collected data were anterior ...

Corneal collagen crosslinking is a promising new treatment of progressive corneal ectasia. Its clinical use has been rapidly increasing since it was originally introduced in 1997 as the first treatment that can improve biomechanical stability of the weakened cornea. The method is based on the combined action of photosensitizer riboflavin (vitamin B2) and ultraviolet A light, which induce the fo...

Keratoconus is a noninflammatory, usually, bilateral progressive disease. It is a pathology characterized by a progressive thinning and ectasia of the stroma that results in cone-shaped cornea. In advanced keratoconus with corneal opacities, keratoplasty, can be the only surgical alternative for a long time. Recently, new treatment alternatives were developed in keratoconus treatment, such as i...

Midstromal implant of an isolated Bowman layer graft is a new approach to reduce ectasia in eyes with advanced keratoconus. The procedure should postpone penetrating or deep anterior lamellar keratoplasty. Ten eyes of 9 patients with progressive, advanced keratoconus and contact lens intolerance underwent the procedure with no intraoperative adverse events. Throughout the study period, we obser...

A 41-year-old man presented 10 years after uneventful laser in situ keratomileusis (LASIK) with symptomatic post-LASIK ectasia. He had treatment with the classic Dresden epithelium-off technique and presented 4 years later with progression of the ectasia. He was subsequently retreated with conductive keratoplasty (CK) followed by a new proprietary epithelium-on corneal collagen crosslinking (CX...

Acute corneal hydrops is a rare complication of advanced corneal ectasia. This case report describes the clinical course of a child with severe atopy and no previous ocular examination who developed bilateral, acute corneal hydrops, secondary to keratoconus, by 8 years of age. The report demonstrates the rapidity of progression in the pediatric phenotype of the disease. This case also provides ...

PURPOSE To evaluate the trends in corneal refractive procedure selection for the correction of myopia, focusing on the relative proportions of laser in situ keratomileusis (LASIK) and surface ablation procedures. METHODS Only eyes that underwent LASIK or surface ablation for the correction of myopia between 2008-2011 were included in this retrospective study. Additional recorded parameters in...