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Cataract clinical trials

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NCT ID: NCT04316936 Completed - Cataract Surgery Clinical Trials

Omidria and Dexycu, or Omidria and Dextenza Compared to Topical Prednisolone Acetate 1% Following Cataract Surgery

Start date: December 10, 2019
Phase: Phase 4
Study type: Interventional

This research will evaluate the efficacy of Omidria and Dexycu, Omidria and Dextenza, and Omidria and prednisolone acetate 1% in the resolution of post-operative inflammation and pain following cataract surgery.

NCT ID: NCT04295122 Not yet recruiting - Cataract Clinical Trials

Comparing the Effectiveness of Phacoemulsification + ECP Laser and Phacoemulsification Alone for Glaucoma Patients

CONCEPT
Start date: March 15, 2020
Phase: Phase 4
Study type: Interventional

Laser endoscopic cyclophotocoagulation (ECP) has been in use for the treatment of glaucoma for over 20 years and is usually used in conjunction with cataract surgery. In the US it is one of the most commonly performed cataract 'plus' surgeries. The take-up of ECP laser has been much lower in the UK and Europe. This is partly due to the lack of robust clinical evidence from randomised controlled trials to justify its use in routine practice. More recently the advent of minimally invasive glaucoma surgery techniques (MIGS) has increased the options available for cataract 'plus' surgery. Without any randomised controlled trial data for the use of ECP laser in this context the increasingly popular use of MIGS devices, such as iStent (the current market leader) may further marginalise the use of ECP laser for cataract 'plus' surgery in patients with Primary Open Angle Glaucoma (POAG) and visually significant cataract. To further evaluate the use of ECP laser for the treatment of glaucoma in patients with glaucoma and cataract, investigators plan to conduct a randomised controlled trial comparing cataract surgery alone versus cataract surgery plus ECP laser surgery. Investigators will compare the efficacy of these interventions for the treatment of glaucoma based on clinical outcomes and also undertake a cost-benefit analysis, taking into account the cost of surgery, any reduction in clinical time allocation for procedures, the frequency of intra- and post-operative complications, and any reduction in the need for topical glaucoma treatments post-surgery, as well as the frequency with which further glaucoma filtering surgery is needed for patients in each group. Investigators anticipate that a total number of 160 patients (80 in each arm) will be adequate to detect whether there is any difference in efficacy between cataract surgery + ECP versus cataract surgery alone. Recruitment is expected to take around 9-12 months. Participants will undergo treatment wash-out (28 days minimum) of any eye drops they use for their glaucoma prior to data collection at baseline (before surgery) and prior to data collection at one-year and at two-years post-surgery. Results will be reviewed during an interim analysis at 6 months once 50 patients have reached that time point.

NCT ID: NCT04290676 Completed - Cataract Clinical Trials

DEXYCU (Dexamethasone Intraocular Suspension) 9% Retrospective Study 001

DEXYCURetro
Start date: November 13, 2019
Phase:
Study type: Observational

Retrospective study to provide clinical outcomes with DEXYCU (dexamethasone intraocular suspension) 9%.

NCT ID: NCT04286646 Completed - Pupillary Disorders Clinical Trials

Correlation of Pupillary Diameter Changewith Age and Anterior Chamber Depth After Cataract Surgery

Start date: May 20, 2018
Phase:
Study type: Observational

PURPOSE: To assess the correlation between the change in pupil diameter, age and depth of the anterior chamber after 3 months of cataract surgery both in photopic and mesopic conditions. And study the changes of the pupillary diameter at 3 months after surgery in the two light conditions

NCT ID: NCT04274634 Not yet recruiting - Cataract Clinical Trials

The Oscillation of Crystalline and Intraocular Lenses

Start date: October 2020
Phase:
Study type: Observational

The crystalline lens of the human eye helps to sharpen vision. There can be issues with the support/stability of the lens. This could be seen with the naked eye of an external observer or with the use of a slit lamp. Certain eye conditions can predispose to issues with lens stability. If patients have stability issues with their natural lens- this would be termed as "phakodonesis". However, in patients who have had prior cataract surgery with implantation of an artificial lens (IOL)- this would be termed as "pseudophakodonesis". Eye conditions such as pseudoexfoliation or Marfan-syndrome can lead to unstable lens support- this can be detected if there are advanced stability issues. However, small instability in the eye's would not be detected with present descriptive methods. The authors have designed a high-speed camera which is able to detect stability of the lens, especially during eye movements. The high-speed camera can detect variation in the change of light reflex from the lens and calculate the amount of lens instability/oscillation. The results (in normal eyes) of this high-speed camera has already been published in a peer-review journal. It is non-contact and measures lens movement. The test lasts less than 5 minutes. Further research is required to assess the amount of lens oscillation (wobbling) in different eye populations - patients with previous cataract surgery (an artificial implant is used to replace the lens) or eye conditions (such as pseudoexfoliation, Marfan syndrome). The amount of lens stability has a role in the planning of further intraocular surgery - especially cataract extraction - however, at present, there is no approved quantitative measurement for this. Participants will be recruited through Anglia Ruskin University (educational establishment), local community groups, and through Southend University Hospital eye clinics (NHS organisation). Participants' data will remain anonymous.

NCT ID: NCT04274088 Completed - IOL, Cataract Clinical Trials

The Clinical Importance of Angle Alpha by Multifocal Intraocular Lenses.

Start date: October 2014
Phase:
Study type: Observational

Purpose: to evaluate the effect of visual axis positioning on the optical performance of the Tecnis MIOL and the Diff-aA MIOL.

NCT ID: NCT04273282 Completed - Cataract Clinical Trials

A Prospective Clinical Study Evaluating Dexycu vs Prednisolone Acetate 1%

Start date: December 16, 2019
Phase: Phase 4
Study type: Interventional

This is a post-approval, open-label, randomized, self-controlled prospective clinical study to evaluate the safety and ocular efficacy of Dexycu in controlling postoperative ocular pain and inflammation associated with cataract surgery.

NCT ID: NCT04271709 Active, not recruiting - Cataract Clinical Trials

Manhattan Vision Screening and Follow-Up Study (NYC-SIGHT)

Start date: September 30, 2019
Phase: N/A
Study type: Interventional

The investigators are conducting a 5-year prospective, cluster-randomized controlled trial, funded by the Centers for Disease Control (CDC), which provides vision screenings to underserved, vulnerable New York City residents living in affordable housing buildings in Harlem and Washington Heights.

NCT ID: NCT04266847 Recruiting - Cataract Senile Clinical Trials

Prospective Clinical Study of Preoperative and Postoperative Unilateral Mild Cataract Patients

Start date: October 30, 2019
Phase: N/A
Study type: Interventional

This is to compare preoperative and postoperative binocular functional vision in patients with unilateral intraocular len(IOL) in one eye and mild cataract in the fellow eye.

NCT ID: NCT04265846 Recruiting - Presbyopia Clinical Trials

Prospective Clinical Study of Different Intraocular Lens Implantation Designed for the Correction of Presbyopia

Start date: May 31, 2020
Phase:
Study type: Observational

Compare postoperative Subjective and objective visual quality and economic efficiency of different Intraocular Lens(IOLs) implantation designed for the correction of presbyopia.