Active clinical trials for "Keratoconus"

The purpose of the present Randomized Clinical Trial (RCT) is to compare the efficacy and safety of transepithelial corneal cross-linking using iontophoresis (T-ionto CL) to treat progressive keratoconus in comparison with standard cross-linking (standard CL).

Background: Corneal cross linking is a procedure that induces collagen cross linking of the corneal stroma due to release of reactive oxygen radicals upon activation of topically applied riboflavine A by UVA exposure. This procedure might be capable of reducing keratocouns progression. Purpose: Although there are no randomised controlled trials on the effectiveness of corneal cross linking for the treatment of keratoconus it gains more and more importance in the general clinical setting. Therefore, the investigators started such randomised, placebo controlled, double blinded, multicenter trial to find out if this treatment is as effective as it promises to be. Methods: Randomised, placebo controlled, double blinded, multicenter trial.

Transepithelial CXL (performed without epithelial removal) seem to have similar clinical effect on keratoconic eyes compared to the standard CXL (which includes epithelial removal). The current study attempts to prove that hypothesis. A prospective, controlled, randomized, contralateral trial, will involve one eye of the patient to be treated with transepithelial CXL, while the control eye will be treated with the standard CXL. Totally 20 patients (age >18 and <40 years) referred by an ophthalmologist to the eye department of the University Hospital North Norway for CXL treatment of bilateral progressive keratoconus, will be recruited.

The objective of this investigation is to evaluate the feasibility, safety and efficacy of the Vedera KXS for the reduction or elimination of myopia and astigmatism in patients with keratoconus, who are no longer able to achieve adequate vision with their contact lenses or glasses.

To evaluate the safety and efficacy of epithelium-on corneal collagen cross-linking (CXL) in impeding the progression of, and/or reducing corneal curvature (Kmax) in eyes with progressive keratoconus. Epithelium-on CXL uses a formulation that allows the riboflavin to penetrate the cornea without the need to remove the epithelium, the outer most layer of the cornea.

A complete intrastromal ring, MyoRing (Dioptex, GmbH, Linz, Austria), suggested by Albert Daxer in 2007, is a relatively new technique that has been demonstrated to treat keratoconus safely and effectively.Corneal collagen crosslinking (CXL), introduced by Wollensak et al. in 2003, has become a standard treatment for progressive keratoconus to slow or possibly stop progression of disease. The formation of the stromal pocket during MyoRing implantation offers the opportunity for simultaneous introduction of riboflavin 0.1% into the pocket followed by UVA irradiation to provide combined treatment in patients with progressive keratoconus.

CACICOL20 is an ophthalmic solution based on the technology of RGTAs (ReGeneraTingAgents). It consists of large biopolymers, imitating the structure of heparansulphate. The protecting effect on different biological tissues and enhancement of wound healing has been described in several studies. Keratoconus is a relatively common disease, with incidences ranging from 1.3 to 25 per 100,000 per year across different populations. Corneal collagen cross-linking represents a treatment option for these patients, aiming to prevent progression of the disease via stabilization of corneal microstructure. Corneal epithelial removal prior to the ultraviolet A/riboflavin cross-linking procedure significantly improves the outcome of the intervention, due to ameliorated distribution of riboflavin. The aim of the present study is to investigate the effect of CACICOL20 on corneal epithelial wound closure after collagen cross-linking in patients with keratoconus. Results may lead to an improved management and pain reduction of patients with corneal epithelial defects.

Keratoconus is a chronic progressive non - inflammatory disorder characterised by progressive steepening and thinning of cornea and high myopic astigmatism, accounting for poor visual acuity in such individuals. Keratoconus seems to be more advanced on presentation, in young patients. The investigators intend to evaluate the effectiveness of conventional collagen cross linking in young patients diagnosed with keratoconus.

To evaluate the efficacy of mid-stromal implantation of an isolated Bowman layer graft, to reduce and stabilize ectasia in eyes with advanced keratoconus

Evaluation of the safety and efficacy of surface ablation followed by Collagen Cross-linking in patients with keratoconus