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280 active trials for Glaucoma

Inflammatory Biomarkers in Ocular Surface in Primary Open Angle Glaucoma or Ocular Hypertension Under Topical Prostaglandins

Glaucoma is a chronic optic neuropathy whose main modifiable risk factor is an abnormally elevated intraocular pressure. The aim of glaucoma treatment is to slow the progression of the disease by reducing intraocular pressure. Prostaglandin derivatives are the most effective topical drugs in reducing intraocular pressure (IOP). Among these, latanoprost was the first agent of this type to be approved for use in patients with glaucoma or ocular hypertension. These eye drops are available with and without preservatives. There are two commercial brands in our environment, Xalatan®, which contains 0.005% latanoprost and 0.2 mg/ml benzalkonium chloride (BAK) and Monoprost®, which contains the same amount of latanoprost but does not carry a preservative. The prostaglandin analog with a lower concentration of active ingredient available in Spain without preservative is tafluprost 0.0015%, commercially available under the name Saflutan®. The long-term use of hypotensive eye drops with preservatives generates changes in the ocular surface, such as instability of the tear film, conjunctival inflammation, subconjunctival fibrosis, apoptosis of the conjunctival epithelium and deterioration of the corneal surface, causing symptoms such as stinging, tearing, sensation foreign body, photophobia and blurred vision. This research will evaluate the changes in the ocular surface and in the expression of inflammatory molecules that occur in the conjunctiva in patients with a diagnosis of glaucoma and ocular hypertension who are under ocular hypotensive treatment with tafluprost, comparing it with the two commercial preparations of latanoprost. These three groups of patients will have a control group of patients with a diagnosis of ocular hypertension who will not have any topical hypotensive medication.

ValladolidStart: October 2021
Latanoprost Preserved Versus Unpreserved: Effect on Tear Film Thickness as Measured With OCT

Topical antihypertensive eye drops are a key element of modern antiglaucoma treatment. Most of these eye drops contain preservatives to allow for the use of multi-dose containers. In the recent years evidence has, however, accumulated that these preservatives may induce ocular surface disease (OSD). This is particularly true for the most widely used preservative, benzalkonium chloride (BAK). Whereas this is well documented in many in vitro and animal studies, evidence from clinical trials is sparse. The only randomized masked study that showed superiority is a pivotal company-sponsored study indicating improved tolerability and reduced hyperemia of unpreserved versus preserved latanoprost eye drops. The investigators have recently introduced an optical coherence tomography (OCT) technology that provides a resolution as high as 1.2 µm for the human cornea. Using this technology the investigators were able to show that tear film thickness (TFT) is negatively correlated with symptoms of OSD. Changes in TFT can be assessed with very high sensitivity below the level of resolution as also evident from studies after administration of lubricants. In the present study, the investigators hypothesize that switching glaucoma patients from preserved prostaglandin analogues to unpreserved latanoprost is associated with an increase in TFT as measured with OCT. As a control the investigators will use preserved latanoprost and the study hypothesis will be tested in a randomized, controlled, single-masked parallel group design. TFT is chosen as main outcome variable, standard measures for signs and symptoms of OSD are selected as secondary outcomes. The present study may provide valuable information on the superiority of unpreserved versus preserved therapy.

ViennaStart: September 2015
Study Comparing the Kinetics of Endothelial Cell Loss Associated With the XEN® Implant Versus Traditional Filtering Surgery for Glaucoma

Glaucoma is a blinding optic neuropathy that affects 60 million people worldwide. Of all the types of existing glaucoma, primary open-angle glaucoma is the most common etiology. The therapeutic arsenal today includes drug lowering treatments, lasers and surgery. The most frequent glaucoma surgeries are, in France, trabeculectomy and non-perforating deep sclerectomy (NPDS). These are two filtering surgeries whose principle is to lower the intra ocular pressure (IOP) by creating an evacuation path of the aqueous humor from the anterior chamber (AC) of the eye to the space subconjunctival creating a filtration bubble (FB). These two procedures are currently considered the gold standard. They can be performed alone or at the same time as cataract surgery. The short-term complications encountered with these techniques are early hypotonia and its attendant complications (choroidal detachment, hypotonic maculopathy, hemorrhages, etc.), the most common cause of which is conjunctival leakage from the bubble. In the medium term, increases in blood pressure with deep AC testify to a scleral flap that is too tight which may require suture lysis. Finally, the problems of excessive conjunctival-Tenon healing concern 25 to 30% of those operated on and are responsible for the majority of late blood pressure increases. In the longer term, the most common complication is cataracts; the rarest, but most serious complication is infection of BF, which occurs more readily when the walls of the FB are ischemic or even perforated. It can be complicated by an extremely serious endophthalmitis. A new minimally invasive therapeutic option has been developed limiting per- and post-operative complications. Unlike traditional techniques which present an ab externo approach, the ab interno approach of the new technique proposed consists of the implantation of a tube of collagen 6 mm in length and 45 µm of light called Xen® through the AC .

Paris, Ile De FranceStart: October 2021
AGV Implantation With Ologen in Pediatric Glaucomas

Ahmed Glaucoma Valve Implantation with Ologen augmentation in secondary pediatric glaucomas: A 2-year randomized controlled trial. Background: Many studies have investigated the clinical benefits of Ologen for trabeculectomy. However, its benefits for Ahmed glaucoma valve implantation have not been widely investigated. Purpose: The aim of this study was to compare the 2-year outcomes of AGV implantation with and without Ologen adjuvant for the treatment of children with 2ry pediatric glaucoma. Design: This is a single-center, randomized, controlled study. Participants: Consecutive children with refractory pediatric glaucoma requiring AGV implantation were enrolled in this study. Methods: Refractory pediatric glaucoma was defined by at least 2 repeated IOP measurements greater than 21 mmHg and accompanying signs of buphthalmos, corneal edema, Haabs striae, or optic nerve cupping despite maximal tolerated medical therapy. The primary outcome measure was AGV success. Complete success was defined as intraocular pressure (IOP) between 6 and 20 mmHg without glaucoma medications and additional IOP-lowering surgeries. Qualified success was defined as above, except IOP control maintained with glaucoma medications. In Ologen eyes, a round 12 × 1 mm circular Ologen disc will be placed over the FP7 or FP8 AGV-plate immediately before conjunctival closure. Control eyes received conventional FP7 or FP8 AGV surgery without Ologen augmentation.

Start: August 2021