View clinical trials related to Cataract.
Filter by:Comparison of the visual quality of traditional ultrasound biometrics and lenstar on the cataract patients with diabetic retinopathy after vitrectomy in the 3 months later.To evaluate the clinical value of lenstar in post-vitrectomy patients.
The purpose of this study is to evaluate cumulative dissipated energy (CDE), endothelial cell loss, and average torsional amplitude with combination of LenSx® and Centurion® compared to conventional cataract surgery.
To investigate the prospective association between a vegetarian diet and chronic degenerative diseases in two cohorts of Taiwanese Buddhists
The investigational device is an approved femtosecond laser (FSL) device with an integrated imaging system to perform certain steps of the cataract procedure. The FSL will perform anterior capsulotomy and lens fragmentation in individuals suffering from age-related cataract with need of cataract surgery. Cataract surgery will be performed in subjects who have signed an informed consent form. Macula thickness will be measured with Spectralis OCT on screening date. Postoperative examinations will be implemented in accordance with the approved investigational plan on subjects and includes: visual acuity, slitlamp examination, retinal oct imaging and quantitative autofluorescence.
The development of optical coherence tomography (OCT) and its application for in vivo imaging has opened entirely new opportunities in ophthalmology. The technology allows for both noninvasive visualization of the morphology and measurement of functional parameters within ocular tissues to a depth of a few millimetres even in nontransparent media. Until now the resolution of commercially available OCT systems is, however, much lower than that provided by light microscopy. Recently, an ultrahigh-resolution OCT system was developed by our group providing resolutions of 1.7 and 17 µm in axial and lateral direction, respectively. This axial resolution is about four times better than that provided by standard OCT systems. It allows to perform in vivo imaging with a resolution close to biopsy of tissue and to visualize structures of the anterior eye segment with a remarkable richness of detail. The prototype was applied for in vivo imaging of the cornea including the precorneal tear film. The goal of the planned pilot study is to apply this innovative imaging modality for visualization of the ultrastructure of the different parts of the anterior eye segment structures in diseased subjects, as well as in patients who underwent minimally invasive glaucoma surgery (MIGS). The obtained in vivo cross sectional images and three-dimensional data sets are hoped for contributing to the knowledge about the anatomy and physiology of the corresponding tissues. This could allow for a better interpretation of clinical features and findings obtained in slit lamp examination.
This is a prospective, investigator-masked randomised controlled education-intervention trial of intense simulation-based surgical education plus conventional training versus a current six-week standard training course. The aim is to investigate whether the addition of simulation-based surgical education to standard training improves competence and surgical outcomes. All participants in the study will receive the educational intervention of the six-week Orbis-COS course. The intervention groups will receive this training and an additional element of learning and sustained deliberate practice using model eyes and simulation.
Blindness and visual impairment severely impact the visual health and life quality of people, particularly the 2.566 million senior citizens aged at 65 and above in Shanghai. The main reason is uncorrected refractive error, of which, 62.1% can be solved through refractive correction. For this reason, the uncorrected refractive errors of 154,000 senior citizens in Shanghai can be taken as a priority among the public health issues to prevent blindness. Now, with the aim to reduce the prevalence rate of blindness and visual impairment, it is planned to establish a public health service mechanism in terms of refractive error screening and correction for the elderly by relying on Shanghai's three-level (city-district-community) eye diseases prevention network, using proper refractive correction technology, and moving related services forward to communities in order to screen, identity, and correct blindness and visual impairment caused by refractive errors as early as possible.
The AssiAnchor 2 is a fixation ophthalmic device. The device is manufactured by Hanita Lenses from PMMA material which is being used for the production of Intra-ocular lenses. The device is intended for patients requiring capsule centration to clip the anterior lens capsule between the arms of the device and secure it to the scleral wall.
This investigation assessed the visual performance of presbyopia and cataract patients after bilateral implantation of 4 distinct sorts of multifocal IOLs: At lisa tri, PanOptix, ReSTOR, and Symfony. The clinical results demonstrated here were excellent for four groups, however, there were also differences in group ReSTOR, UCVA and BCVA for the intermediate and near of the other groups showed less vision also symphony group for far distance demonstrated less vision than other groups, which may be related to their design.Multifocal IOLs demonstrated very good technology and unquestionably have a place in refractive surgery, whether for clear lens extraction or cataracts.Patients can expect excellent outcomes and surgeons can expect patients to be very satisfied with surgical outcomes. Four groups multifocal lenses provided excellent distance, intermediate and near vision, but several measures indicated that the PanOptix and at lisa tri lens provided better vision in all distances. Spectacle independence was significantly higher with four groups. Multifocal IOL design might play a role in the postsurgical outcome, because better results were obtained with diffractive lenses. Although there were differences in the results of these four lenses in the study, all of the results were acceptable.
To evaluate long-term intraocular lens (IOL) decentration and tilt in eyes with pseudoexfoliation syndrome (PES) following cataract surgery using Visante anterior segment OCT and iTrace Visual Function Analyzer.