- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04045704
Cataract Surgery on Advanced Age Related Macular Degeneration Patients
The Effects of Unilateral and Bilateral Cataract Extraction on Visual Function of Advanced Age-Related Macular Degeneration Patients.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Phase
- Not Applicable
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
Patients above the age of fifty with both Advanced AMD and Cataracts bilaterally from the Okanagan Valley will be selected for this study.
Patients who chose to have bilateral cataract surgery, were able to understand the research parameters, and had no other severe eye disease that may distort the studies results.
Patients will be selected for the study according to the National Eye Institute definition of Advanced AMD.
"Advanced AMD (AREDS category 4) is characterized by one or more of the following (in the absence of other causes) in one eye:
Geographic atrophy of the RPE involving the foveal center.
Neovascular maculopathy that includes the following:
- Choroidal neovascularization (CNV) defined as pathologic angiogenesis originating from the choroidal vasculature that extends through a defect in Bruch's membrane
- Serous and/or hemorrhagic detachment of the neurosensory retina or RPE
- Retinal hard exudates (a secondary phenomenon resulting from chronic intravascular leakage)
- Subretinal and sub-RPE fibrovascular proliferation
- Disciform scar (subretinal fibrosis)"
Exclusion Criteria:
- Severe intraoperative or postoperative complications such as retinal detachments, and capsule ruptures
- Inability to complete the required testing (auto-refractive and visual acuity)
- Inability to attend appointments
- Inability to complete the questionnaire with Co-I assistance
- Severe eye disease that may distort the studies results such as but not limited to Epithelial Basement Membrane Dystrophy (EBMD) and retinal detachments.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Life style Questionnaire to determine change in visual function.
Time Frame: Through study completion, an average of 1 year
|
Our primary outcome will be a life style questionnaire (qualitative) to determine the change in visual function from baseline to after surgery. This questionnaire includes 25 close-ended questions that are graded on a 5 point grading scale from 1 (great difficulty due to vision) and 5 (no problem due to vision). The questions can also be graded as not applicable to an individuals life, or 0 being something there are no longer possible to do, due to vision. The 25 close-ended questions are divided into 4 sub-scales:
A total score can range from a 125 indicating best visual function to 0 indicating complete loss of visual function. |
Through study completion, an average of 1 year
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Snellens Chart to determine change in visual acuity
Time Frame: Through study completion, an average of 1 year
|
Quantitative measure of a patients visual acuity.
Change from baseline visual acuity to after surgery on both eyes.
|
Through study completion, an average of 1 year
|
Auto Refractive to determine change in visual acuity
Time Frame: Through study completion, an average of 1 year
|
An auto-refractor is a computerized machine to measure patients visual acuity.
Change from baseline visual acuity to after surgery on both eyes.
|
Through study completion, an average of 1 year
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Anticipated)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- H19-00830
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Cataract
-
Fundación Pública Andaluza para la Investigación...CompletedCataract | Cataract Mature | Cataract, Nuclear
-
Johannes Kepler University of LinzCompletedCataract Complicated | Cataract Complications OperationsAustria
-
Gemini Eye ClinicRecruitingBilateral Cataract | Unilateral CataractCzechia
-
Universitaire Ziekenhuizen KU LeuvenLaboratoires TheaRecruiting
-
Omer Othman AbdullahCompletedCongenital Cataract | Pediatric CataractIraq
-
Johannes Kepler University of LinzRecruitingAphakia | Secondary Cataract Surgery | Complicated Cataract SurgeryAustria
-
Yonsei UniversityCompletedCataract PatientsKorea, Republic of
-
Advanced Center for Eyecare GlobalNot yet recruiting
-
Vienna Institute for Research in Ocular SurgeryRecruiting
-
Zhongshan Ophthalmic Center, Sun Yat-sen UniversityNot yet recruitingCataract ExtractionChina
Clinical Trials on Cataract Surgery
-
Iladevi Cataract and IOL Research CenterCompletedCataract Surgery | Shallow Anterior Chamber | PhacoemulsificationIndia
-
Technolas Perfect Vision GmbHCompletedCataractCzech Republic, India
-
Technolas Perfect Vision GmbHCompletedCataractCzech Republic, India
-
University of OklahomaCompletedPrimary Open Angle Glaucoma | Cataract | Pigmentary GlaucomaUnited States
-
Glaukos CorporationCompletedOpen-Angle GlaucomaUnited States
-
Ziemer Ophthalmic Systems AGRecruiting
-
Technolas Perfect Vision GmbHCompleted
-
Sun Yat-sen UniversityCompleted
-
Guy's and St Thomas' NHS Foundation TrustCompletedCataract | Surgery
-
University Hospital, BordeauxCompleted