View clinical trials related to Cataract.
Filter by:The study purpose is to demonstrate safety and performance of bilateral implantation of LuxHighAdd intraocular lens compared with the LuxGood Monofocal lens.
The goal of this clinical trial is to learn if an app-based vision testing (WHOeyes) combined with a questionnaire can recognize those who have to go back to the hospital, and thus replace the in-clinic 1-week review after an uncomplicated cataract surgery in people with senile cataract. It will also learn about the cost-effectiveness and environmental benefits of such remote follow-up pattern. Besides, the safety and user's satisfaction will also be evaluated. The main questions it aims to answer are: For people with uncomplicated senile cataract, does 1-week clinical follow-up replaced with remote follow-up (using a vision test app and a questionnaire) not adversely affect patients' prognosis? Can this alternative approach bring greater cost-effectiveness and environmental friendliness compared to the traditional follow-up method? Researchers will compare one-week remote follow-up to a routine clinical follow-up to see if one-week remote follow-up is feasible. Participants will: Visit the clinic to finish routine follow-up 1 day and 1 month after cataract surgery. Using app (WHOeyes) and a questionnaire at home or visit the clinic 1 week after cataract surgery.
The aim of this study is to investigate the 3-month visual performance of the CT LUCIA 621P IOL, a hydrophobic aspheric monofocal IOL with a non-constant aspheric optic profile in adult patients 50 years of age or older who are undergoing cataract surgery.
The purpose of this study is to investigate whether there is a difference in best spectacle corrected visual acuity (BSCVA) in patients treated with one of the following two surgeries: (1) cataract surgery with preservation of the diseased endothelial cells ("cataract surgery only experimental intervention, investigational therapy/ arm 1); (2) cataract surgery combined with removal of the diseased endothelial cells and the attached Descemet's membrane followed by transplantation of a healthy endothelial cell layer with attached Descemet's membrane ("triple-DMEK"(""cataract surgery only", control intervention comparator therapy/ arm 2)
A refractive surprise can be defined as the failure to achieve the intended postoperative refractive target or the presentation of unexpected and, unwanted post-operative refractive error. It can cause anisometropia or dominance switch and is a source of patient dissatisfaction due to unmet expectations.The best way to manage refractive surprise is to prevent it. The 2017 NICE guidelines on the management of cataracts provide advice on prevention of refractive surprise through accurate biometry, A-constant optimisation, intraocular lens (IOL) formula selection and avoiding wrong lens implant errors.Benchmark standards for NHS cataract surgery dictate that 85% of eyes should be within 1 dioptre (D) and 55% within 0.5D of target spherical equivalent refraction following surgery.
The goal of this observational study is to learn about the intermediate and near vision in patiënts who underwent cataract surgery with a specific technique, called "bag in the lens". The main question it aims to answer is whether patiens who underwent this type of cataract surgery have better intermediate vision without spectacle correction than patients who underwent the classic lens in the bag cataract surgery. Participants will: - Have to read with and without spectacle correction at different distances (4 meters, 66 centimeters, 40 centimeters) - Have to fill in 2 questionnaires about visual functioning and spectacle independance Researchers will compare these values to the same values from the standard population who underwent the classic lens in the bag cataract surgery with a monofocal intraocular lens .
The Web-based Barret True K formula with no history formula has been proven to be a good choice for cataract patients after RK in several studies. The American society of cataract and refractive surgeons provides several IOL formulas for cataract patients who have undergone previous corneal refractive surgery. In cases where only IOL-Master data are available, Holladay 1 (Double-K) [Holladay 1 (D-K)] can be used for IOL power calculation in cataract patients with a history of RK. The traditional Haigis formula has also been shown to be effective for cataract patients after RK. To compare the accuracy of four intraocular lens (IOL) power calculation formulas in cataract patients after RK. They are Barrett True-K formula, Holladay 1(D-K) formula, Haigis formula, and MM formula.
This research study is evaluating the safety and efficacy (performance) of the Bausch + Lomb enVista Beyond Hydrophobic Acrylic Extended Depth of Focus Intraocular Lens (IOL) in subjects who receive this IOL in both eyes.
This study aims to investigate the impact of depth of field differences between the use of the 3D imaging system (NGENUITY® 3D Visualization System, Alcon, TX, USA) and conventional optical microscope in cataract surgery for highly myopic patients on intraoperative parameters and outcomes.
Cataracts are a clouding of the lens of the eye. Cataract surgery replaces the cloudy lens with a clear artificial lens. It is one of the leading causes of low vision worldwide. Since cataracts are mostly age-related, the number of patients with cataracts is increasing sharply due to an ageing population. The indication for cataract surgery is currently based on the visual impairment experienced by the patient, a measurement of visual acuity and the ophthalmologist's assessment of the extent to which the clouding of the lens explains the patient's symptoms. It has been said that after cataract surgery, "the world opens up to you". However, about 10% of patients actually experience worse vision after surgery. This amounts to almost a whole month of potentially unnecessary surgery. It is therefore important to develop a more objective indicator for cataract surgery. Our study focuses on measuring the optical quality of the eye before and after cataract surgery. We also ask patients before and after cataract surgery how they themselves perceive the quality of their vision. We do this with different patient-reported outcomes. We investigate whether the objective measurement of the optical quality of the eye can predict which patients will be satisfied with the cataract surgery. With this, we aim to further improve patient care and prevent unnecessary surgery.