Active clinical trials for "Glaucoma"

The primary goal of the trial is to show that optical coherence tomography (OCT) technology can be used to effectively screen for diseases of the eye including glaucoma, macular diseases and keratoconus. Glaucoma is a disease that causes permanent vision loss and is usually accompanied by increased eye pressure. Macular diseases affect sharp, central vision. Keratoconus is a disease that affects the cornea (clear surface covering the colored part of the eye).

In this study the investigators are going to study the retinal nerve fibers layers (RNFL) modification of two groups of patients, one taking no drugs, the other taking forskolin, rutin and vitamins B1 and B2.

It is well established to assess the functionality of a filtering bleb by intraocular pressure (IOP), either as an absolute value or as a percent reduction, and by the need of additional antiglaucoma drugs. It is also possible to evaluate the appearance of a bleb by a clinical score, e.g. the "Wuerzburg bleb classification score" (WBCS). The purpose of this study was to find out whether there is a correlation between clinical findings, in particular IOP and the WBCS. 100 eyes within two years after trabeculectomy were included into the study. Using colour photographs the filtering bleb was evaluated according to the WBCS from two different examiners, both on different levels of clinical experience. WBCS = 1 indicates poor bleb appearance, WBCS = 15 indicates optimal bleb appearance. At the same time, clinical findings like intraocular pressure, best corrected visual acuity, slit lamp biomicroscopy and medical history were taken by another examiner. Trial with surgical intervention

Long-term intraocular pressure (IOP) fluctuation may be significantly associated with the progression of glaucomatous visual field loss, even in patients kept always low IOP after triple procedure, an effective approach for patients with coexisting glaucoma and visually significant cataracts.

Bimatoprost has been shown to provide effective IOP lowering in patients of all races. Conversely, travoprost has been shown to be more effective in black patients than in Caucasians in some studies. However, Noecker et al 2004 compared bimatoprost with travoprost in African-Americans with glaucoma or OHT, and found that bimatoprost was more likely than travoprost to achieve target pressure at 3 months. These racial differences in efficacy of these medications warrant further investigations. The investigators study aim to compare the IOP-lowering efficacies of bimatoprost and travoprost in an Egyptian population with primary open-angle glaucoma (OAG) or ocular hypertension (OHT).

To determine the clinical usefulness of a refined third-generation instrument - The Assessment of Ability Related to Vision (AARV) in establishing the amount of disability, charting the detrimental effects of progressive disease and establishing the beneficial effects of treatment

A soft contact lens integrating a Sensor is placed on subjects with high intraocular pressure (IOP) after administration of an IOP-lowering drug to investigate the device's capacity to detect the induced IOP reduction.

Improved Assessment of Visual Field Change is a trial aimed at investigating mechanisms of visual field testing variability. The investigators have found using larger stimulus size substantially lowers short-term variability. In this study, the investigators will determine if larger stimuli detect visual field change at an earlier time. The investigators are also developing a statistical model that accounts for correlations of neighboring test locations.

Although Benzalkonium chloride (BAC) has been used as a preservative for many years, many studies have demonstrated that prolonged use of topical ocular medications preserved with BAC may exacerbate sequelae associated with ocular surface disease. These effects could lead to the induction of subclinical inflammation,1 reduction of corneal epithelial barrier function, 2, 3 destabilization of the tear film, 4 cataract formation, 5 and an overall higher incidence of patient complaints of dryness and irritation. 4-6 This study will compare the efficacy of travoprost 0.004% without benzalkonium chloride (BAC) to that of the marketed formulation of latanoprost 0.005%with BAC in patients with dryness and irritation and open-angle glaucoma or ocular hypertension. A double blind comparison will be used to assess whether those two different formulations will affect the tear breakup times, corneal staining, and baseline tear secretion tests in patients that are already taking latanoprost regularly with complaints of dryness and irritation. Patients included in the study will be given two bottles, one labeled for their right eye and the other for their left eye. Each pair of bottles will be identical in appearance and randomized with either latanoprost or travoprost and each pair will be assigned a number to aid in future analysis of the final results.

The use of ocular compression and suture release have helped to improve the safety and decrease the risks of glaucoma filtering surgery. This study looks at the decrease in intraocular pressure and glaucoma medications required following glaucoma filtering surgery.