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NCT07506551
Determination of proteins and their levels in the vitreous of eyes with or without pseudoexfoliation syndrome (PEX)
NCT02137161
OBJECTIVE To evaluate the efficacy of bromfenac ophthalmic solution 0.09% for reducing postoperative inflammation in eyes with pseudoexfoliation syndrome (PEX) undergoing cataract surgery and receiving standard postoperative eye drops (dexamethasone 0.1% plus tobramycin 0.3% ophthalmic solution). DESIGN Two arms, parallel group, randomized, single center, prospective, phase IV clinical trial. PARTICIPANTS Sixty-two subjects with PEX and cataract will be sequentially assigned, according to a computer-generated randomization list (1:1), to bromfenac (n = 31) or not (n = 31). INTERVENTION Cataract surgery by means of phacoemulsification and implantation of posterior-chamber intraocular lens will be performed by two experienced ophthalmic surgeons. Standard Arm: only a standard antibiotic and steroid ophthalmic suspension will be given starting the day after the surgery for two weeks, dosed QID for the first week and BID for the second week (dexamethasone 0.1% and tobramycin 0.3% eye drops association). Experimental Arm: eyes will receive bromfenac BID for two weeks starting the day after surgery. Standard post-operative topical antibiotic and steroid will be also given concurrently, dosed QID for the first week and BID for the second week (dexamethasone 0.1% and tobramycin 0.3% eye drops association). Measurements will be carried out at baseline and after one day, 3 days, 1 week and 4 weeks from cataract extraction.
NCT06993311
The Xen implant is an ab interno device that has been shown to be effective in reducing intraocular pressure in several types of glaucoma, although the evidence in pseudoexfoliative glaucoma is limited. The present retrospective observational study aims to increase knowledge about the long-term effectiveness and safety of the implant in pseudoexfoliative glaucoma. Researchers will compare the results with data from patients with open-angle glaucoma.
NCT05447130
To study corneal endothelial cells changes after phacoemulsification in patients with senile cataract and pseudoexfoliation syndrome (PEX) compared with control patients with senile cataract using specular microscope.
NCT05156138
The study aims to compare the endothelial cell count in patients with pseudoexfoliation syndrome to the the endothelial cell count in normal patients above the age of 50.
NCT03265457
Pseudoexfoliation Syndrome Is a common disorder in Egypt. IT is one of the common causes of coexisting cataract and glaucoma. It may be associated with a less than normal endothelial count.
NCT00690222
The purpose is to determine if an intracameral solution of 0.2% tropicamide and 2% phenylephrine can dilate the pupil for cataract surgery as well as pre-operative topical 1% tropicamide and 5% phenylephrine. We will be looking at two separate groups of patients, those with and those without pseudoexfoliation syndrome. We will be looking at how each method affects the size of the pupil at the beginning and at the end of cataract surgery. In addittion, we will look at what effect the two different methods have on blood pressure and heart rate in the pre-operative, peri-operative and post-operative periods.
NCT01767012
Modern phacoemulsification techniques have made cataract surgery safe and efficient over the past several decades. Although the phacoemulsification procedure has improved greatly, cataract surgery still involves trauma. One of the surgical traumas during cataract surgery is the direct trauma of the anterior uvea, resulting in a later chronic immune reaction of the uvea to the implanted intraocular lens (IOL). 1 The breakdown of the blood-aqueous barrier (a measure of the uveal reaction) clinically presents as flare in the anterior chamber. 2 Petternel et al. 3 explained that the protein content of the aqueous humor may mainly arise from the iris root and iris vessels in the anterior chamber. The peak of this flare and cell intensity in the anterior chamber was shown to be reached during the first two days after cataract surgery 4 and flare levels were back to the preoperative values about one year after cataract surgery. 5, 6 Influencing factors are surgical technique 7, perioperative treatment 8, IOL biomaterial and design 9 and host reaction to the IOL. In this study the otherwise same IOL concerning material and design, but one with a new surface modification will be compared to assess the influence on aqueous flare and cell intensity in the anterior chamber. The Polylens (Polytech, Rossdorf, Germany) is a hydrophobic acrylic single-piece open-loop IOL and is available with the standard surface and a novel modified surface. To assess the efficacy of the newly modified surface of the Polylens IOL compared to the same IOL without a modified surface concerning flare and cell intensity in the anterior chamber as well as cellular components on the IOL surface and lens epithelial out-growth from the rhexis after cataract surgery in eyes of patients with diabetes mellitus and pseudoexfoliation syndrome, which typically have a higher incidence of post-operative intra-ocular inflammation.
NCT01637740
A retrospective study of 5753 eyes of cataract surgery patients was conducted at our Clinic. Ocular optical components measured by optical low coherence reflectometry biometer LENSTAR LS 900® of the cataract myopic eyes with pseudoexfoliation syndrome were put in comparison with those of cataract myopic eyes group without pseudoexfoliation syndrome.
NCT00327613
Glaucoma is a worldwide leading cause of blindness. The key feature of this ocular neuropathy is characterized by an excavating optic nerve head. Loss of retinal ganglion cells is the final end point in blinding diseases of the optic nerve such as glaucoma. It is known that neuronal cell death in glaucoma occurs by apoptotic mechanism. In earlier studies, the investigators demonstrated that the process of apoptosis is reflected in circulating leukocytes by different parameters, like differential messenger ribonucleic acid (mRNA) expression and an increased fragmentation of the deoxyribonucleic acid (DNA). Such alterations point out a relationship between cellular stress and apoptotic events. Based on the results of mRNA-expression, the investigators also expect alterations on the protein level. This study is, therefore, designed to characterize the proteome related to the proteins involved in cell death related pathways. Thus the expression pattern of several proteins in leukocytes from patients with primary open angle glaucoma will be analyzed by techniques like Western-blot and tandem mass spectrometry. These samples will be compared with healthy controls. In addition, they will be also compared with samples from patients with Parkinson's disease. Since glaucoma is a neurodegenerative disease, these patients will be included as a positive control in this study.
NCT00121147
The purpose of this study is to compare the additive effect on eye pressure of Azopt and Alphagan P to Travatan.