Active clinical trials for "Cataract"

To observe the clinical characteristics and surgical treatment of 24 cases of congenital cataract complicated with Persistent Fetal Vasculature (PFV) in 28 cases of congenital cataract in our hospital.

Purpose: Comparison of two torical intraocular lenses with differents haptic design in patients with cataract. Methods: In this prospective, randomized clinical trial 120 eyes of 60 patients underwent phacoemulsification. In patient's eyes the Tecnis torical IOL (Abbott Medical Optics) or the AT Torbi torical 709 MB IOL (Zeiss Medical AG) were randomly implanted. Three months after surgery visual acuity, rotation stability and astigmatism correction were evaluated.

The purpose of the study is to evaluate retinal thickness change and the occurrence of central structural retinal changes after uneventful small-incision cataract surgery in eyes with asymptomatic early stages of epiretinal membrane.

This study aims to compare the time required for surgical planning using these two methods and to explore whether differences in surgical accuracy can be identified in a small study of 40 patients.

Justification. Fuchs' corneal endothelial dystrophy (FECD) is one of the main causes of corneal transplantation. In many cases, the corneal decompensation derived from this dystrophy is triggered as a consequence of cataract surgery, so the dilemma of facing isolated cataract surgery or combined with endothelial keratoplasty is often raised. Objective. The present study aims to evaluate and select the most important predictive factors for corneal decompensation after cataract surgery in patients with FECD. Method. Prospective observational study of the preoperative and intraoperative variables presumably associated with postoperative corneal edema requiring Descemet stripping endothelial keratoplasty (DMEK). Consecutive candidates for cataract surgery with FECD will be selected and anterior segment imaging will be performed, along with a complete ophthalmological examination. Clinical, pachymetric, tmographic, densitometric, specular microscopy, and intraoperative variables will be registered.

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 purpose of this study is to investigate the visual performance and refractive predictability with the diffractive toric Finevision POD FT IOL. Predicted and achieved visual outcomes, visual performance at near, intermediate and far distance as well as photic phenomena, rotational stability and spectacle independence will be investigated. The follow-up period is 3 months after which vision and refraction should have stabilized.

Evaluation of capsular bag shape changes after plate-haptic intraocular lens implantation by SS-OCT.

This is an observational, prospective follow-up post-marketing study of CE marked medical devices aimed at treating astigmatism in patients with cataracts. The main objective is to evaluate the response of the intrastromal arcuate incisions procedure for the correction of low corneal astigmatism with the Catalys femtosecond laser using the Cassini Ambient equipment with iris registration in cataract surgery.

Retrospective chart review of patients with pre-existing ocular pathology who underwent cataract surgery with implantation of the Symfony IOL.