View clinical trials related to Cataract.
Filter by:Prospective, two-arm, randomized, bilateral, subject/evaluator-masked clinical study to evaluate the distance visual acuity, peripheral refractive error and functional vision of the EPV IOL compared to a standard monofocal control IOL.
Children have considerable plasticity of the visual system during the formation and maturation of various visual functions at different ages. Congenital cataracts are the leading cause of treatable blindness in children. With the continuous improvement of surgical approaches and surgical techniques, the success rate of congenital cataract surgery has been significantly improved clinically, and the visual function of children has been significantly improved after surgery. However, to date, there has been no experimental study of specific changes in the brain before and after surgery in children with congenital cataracts to explore its relationship with visual reconstruction. We aim to investigate the effects of congenital cataract surgery on the brain function and structure of children through preoperative and postoperative analysis and comparison of brain imaging such as BOLD-fMRI and DTI, and provide new ideas for the clinical treatment and prognostic assessment of this disease.
To evaluate visual outcomes and quality of vision following bilateral implantation of the Clareon PanOptix intraocular lens (IOL) targeted for emmetropia.
To evaluate spectacle independence and patient satisfaction and visual outcomes after bilateral PanOptix implantation in patients with previous multifocal contact lens experience.
Cataract is an important cause of blindness and visual impairment worldwide. At present, the only effective treatment method is surgery. The visual function of most patients can be significantly improved after surgery, but there are still 5-20% of patients whose visual function cannot be improved after surgery. Previous studies have found that the surgical complications and postoperative visual function of cataract patients are closely related to the condition of the fundus, but the current fundus camera cannot perform clear fundus imaging of cataract patients, and the existing potential visual inspections, such as retinal visual inspection, are also inaccurate. Predict postoperative visual acuity. Therefore, there is an urgent need for a reliable postoperative effect prediction system for cataract patients to provide reference for both ophthalmologists and patients. This study intends to collect patient medical record information and traditional/ultra-wide fundus photos and other multi-modal data. Firstly, this study will use artificial intelligence technology to enhance fundus photos of cataract patients to obtain clearer fundus photos. Then this study will use both medical record information and traditional/ultra-wide fundus photographs to predict postoperative vision and visual function of cataract patients.
The focus of this study is to assess the differences in patient perceptions of pain undergoing cataract surgery by using the Refractive Laser-Assisted Cataract Surgery (ReLACS) technique compared to the standard Manual Cataract Surgery (MCS) technique using an immediately sequential bilateral approach. This study also aims to further explore difference in patients' perceptions of pain depending on timing of neurolept anesthesia in the ReLACS technique. The importance of this study is appreciated patient perception of pain during ReLACS, which is an emerging technique for cataract surgery and has been sparsely reported on to date. This investigation will include the analysis of various surgical, ocular, medical, and psychosocial metrics of patients undergoing both ReLACS and MCS at Uptown Eye specialist.
This retrospective-prospective bidirectional cohort study aims to observe ocular parameter changes, different surgical/vision recovery strategies and postoperative adverse effects among young children with cataract. The influence on psychology and cognitive function will be taken into consideration as well.
A novel computerized visual acuity test was developed and tested on both healthy persons and patients with ocular conditions. Visual acuity outcomes of the computerized test will be compared to the Early Treatment Diabetic Retinopathy Study (ETDRS) in measures of reproducibility, accuracy and numbers of questions.
The primary objective is to determine possible implications of deviant tear film quality for optimal refractive precision in patients scheduled for cataract surgery. The study consist of three separate arms where cataract patients will be separated in to Dry Eye Disease (DED) positive and negative groups. The DED positive group will be further subdivided into two different treatment groups (with focus on prolonged use of lubricant and preservative free eye drops). Tear film samples will be taken before treatment, after treatment and after surgical treatment and compared.
Aim:To determine the effectiveness and subjective satisfaction of patients with bilateral cataract surgery and implantation of intraocular lens (IOL) RayOne EMV with enhanced optic, using different degrees of mini-monovision (up to 0.74, between 0.75 -1.24 and 1.25-1.75). To compare individual groups between themselves . In particular, we would like to compare the independence of spectacle correction when looking into the distance, at medium distance and at reading distance.