View clinical trials related to Keratoconus.
Filter by:Corneal collagen crosslinking has been demonstrated as an effective method of reducing progression of both keratoconus and post-refractive corneal ectasia, as well as decreasing the steepness of the cornea in these pathologies. Performing an accelerated CXL procedure with pulsed UVA light may increase the oxygenation of the cornea, which may improve the crosslinking efficacy.
In the present study the investigators compare the clinical outcome corneal cross linking with either the stand-ard Dresden (sCXL) or the accelerated custom-fast (aCFXL) ultraviolet A irradiation protocol using riboflavin-D-α-Tocopheryl polyethyleneglycol1000 succinate for progressive keratoconus.
Keratoconus is a non-inflammatory, progressive disease in which corneal irregularity increases. As the condition develops, more advanced forms of optical correction are needed to improve vision for patients. Until recently, small diameter corneal gas permeable lenses were considered the primary mode of correction for patients with keratoconus. Now, however, practitioners have multiple options for reducing the optical aberrations caused by keratoconus, including scleral lenses. As of yet, no single option for optical correction has been identified as the preferred mode of correction in terms of overall patient satisfaction with vision, comfort, and ease of use. The order in which various forms of optical correction would be most logically introduced has yet to be determined. This is a study comparing small diameter corneal gas permeable and large diameter scleral lenses in individuals with keratoconus. This study will prospectively compare visual satisfaction and ease of use between corneal gas permeable and scleral lenses for patients with mild to moderate keratoconus.
Corneal collagen crosslinking (CXL) has been demonstrated as an effective method of reducing progression of both keratoconus and corneal ectasia after surgery, as well as possibly decreasing the steepness of the cornea in these pathologies. Transepithelial crosslinking in which the epithelium is not removed has been proposed to offer a number of advantages over traditional crosslinking including an increased safety profile by reducing the risk for infection and scarring, faster visual recovery and improved patient comfort in the early postoperative healing period.
This study is being conducted to evaluate the safety and efficacy of isotonic riboflavin for corneal collagen crosslinking for keratoconus and corneal ectasia. will determine the safety and efficacy of corneal collagen crosslinking (CXL) performed with two different riboflavin formulations for reducing corneal curvature.
Study objective is to evaluate the outcomes of placing gamma-irradiated corneal tissue (VisionGraft, CorneaGen, USA) within the cornea of patients with keratoconus, a procedure called Corneal Tissue Addition for Keratoconus (CTAK).
Customized remodeled vision (CuRV) is a new corneal cross-linking protocol for keratoconus, combining a transepithelial approach with customized energy application. Our aim is to follow-up our patients and establish the short-and long-term results of CuRV.
Corneal crosslinking (Crosslinking, CXL) is a treatment offered for the stabilization of early corneal ectatic disorders such as keratoconus. Although CXL is an excellent treatment option to stabilize early ectatic corneas, complications include corneal haze, sterile infiltrate, endothelial cell toxicity, treatment failure and stromal scarring. Corneal haze is a common finding in almost all CXL patients and may decrease visual quality. The effect of 0.02% mitomycin C (MMC) for 2 minutes on corneal haze and scarring in refractive surgery is well established in the literature with many clinical studies confirming its effectiveness. Although the pattern of corneal haze after CXL appears to be different from the haze pattern seen following refractive procedures, both processes are thought to be caused by an inflammatory response. The investigators postulate that MMC can reduce post-CXL haze and scars when using the optimal concentration and duration of exposure.
Keratoconus is a progressive disorder in which central and paracentral corneal stromal thinning occurs. No studies evaluated the influence of keratoconus on stress at work, nor the influence of treatments of keratoconus on stress at work, including Quality of Life at work and on perception of work. Moreover, it has been shown that some pathologies had greater influence in some occupations, also depending on other characteristics of individuals such as age, sex or socio professional groups. Therefore, we hypothesized that keratoconus 1) will influence stress at work including QoL at work and perception of work, 2) will have a greater influence in some occupations and depending on age, sex, or stage of keratoconus, 3) will induce stoppage of work and occupational reclassifications.
Monocentric clinical study to develop an imaging analysis algorithm for the Eyestar 900 to identify keratoconus corneas and improve biometry for intraocular lens calculations