- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01654159
Assessment of Visual Function and Optics in Intraocular Lenses
Evaluating Subjective and Objective Performance of Instrumentation Used and Devices Implanted in Cataract Surgery
The main objective of this research is to assess visual function and optical performance of CE marked, implanted intraocular lenses to understand the individual factors that affect their performance and how these may be improved in future designs and to evaluate measurement techniques.
All outcome measures will be captured 3-6 months after surgery
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
A cataract occurs when the natural lens of the eye, which plays a major role in the focusing of light and production of sharp visual images, becomes cloudy and hardens, resulting in a loss of visual function. Left untreated, cataracts can cause preventable blindness. During cataract surgery the natural lens is removed and a man-made intraocular lens (IOL) is implanted in its place.
IOL technology has advanced significantly in recent years and as a result the main goal of cataract surgery is no longer simply the successful removal of the cloudy lens and restoration of vision. Providing patients with the best possible refractive outcome and the best possible visual quality is now much more important when assessing surgery outcomes.
Aspheric, multifocal and accommodating IOLs are among the new designs developed to improve visual outcome after cataract surgery. In order to assess the effectiveness of these designs, visual function needs to be evaluated both objectively and subjectively following their implantation. Such evaluation allows the continued evolution of these IOL designs towards optimum. This proposed research study, which aims to assess the visual function and optical performance of new CE marked IOLs after implantation, could significantly contribute to the enhancement and development of improved IOL designs in the future.
We have successfully conducted similar patient trials for the past 5 years. As new IOL designs are constantly being developed, approved and CE marked, this type of research study will always have the potential to offer new information that is not currently available and has not previously been assessed or published and could contribute towards improved IOL designs in the future.
All outcome measures will be captured 3-6 months after surgery
Study Type
Enrollment (Estimated)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
West Midlands
-
Birmingham, West Midlands, United Kingdom, B18 7QH
- Birmingham Midland Eye Centre
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Subjects age between 40-85 years, may be either male or female, and may be of any race (as cataracts rarely occur before the age of 40 and above 85 other ocular pathology is common).
- Subjects requiring cataract surgery.
- Potential for best corrected visual acuity of 6/12 or better (as visual function in these patients will be affected by ocular pathology).
- Subjects with clear intraocular media other than cataract (as assessing cataract).
- General physical and mental condition allowing participation in current study.
- Subjects willing to participate as evidenced by signing the written informed
Exclusion Criteria:
- Prior surgery on the selected eye
- Previous uveitis or trauma to the selected eye, anterior or posterior synechiae
- Potential for best corrected visual acuity worse than 6/12 (since this may indicate other causes of ocular pathology)
- Partial or total paralysis, Parkinsons syndrome, cerebrovascular accident or other condition that could impact on the results of the study
- Subject over 85 years of age (ocular pathology more common in this age group)
- Subjects without adequate physical and mental capacity to enable participation in the study
- Subject unwilling to participate
- Systemic or topical medication known to influence visual function measures
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Placebo Comparator: Monofocal
Monofocal IOL Implant Manufacturers of IOLs used as monofocal comparator are Alcon, AMO, Bausch and Lomb, Lenstec, Oculentis, Ophthec, Physiol and Zeiss |
Monofocal Intraocular lens will be implanted
Other Names:
|
Experimental: Multifocal
Multifocal IOL Manufacturers of multifocal IOLs under investigation are Alcon, AMO, Bausch and Lomb, Lenstec, Oculentis, Ophthec, Physiol and Zeiss |
Multifocal IOL will be implanted
|
Experimental: Toric
Toric IOL Manufacturers of toric IOLs under investigation are Alcon, AMO, Bausch and Lomb, Lenstec, Oculentis, Ophthec, Physiol and Zeiss |
Toric IOLS will be implanted
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Unaided distance and near vision
Time Frame: Measured at 3-6 months after surgery
|
Visual Acuity (logMAR)
|
Measured at 3-6 months after surgery
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Patient Satisfaction
Time Frame: Measured at 3-6 months after surgery
|
NAVQ score
|
Measured at 3-6 months after surgery
|
Residual refraction
Time Frame: Measured at 3-6 months after surgery
|
Autorefraction / subjective refraction
|
Measured at 3-6 months after surgery
|
Aberrations
Time Frame: Measured at 3-6 months after surgery
|
Aberrometry
|
Measured at 3-6 months after surgery
|
Corrected distance and near acuity
Time Frame: Measured at 3-6 months after surgery
|
Acuity (logMAR)
|
Measured at 3-6 months after surgery
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Sunil Shah, FRCS, Birmingham Midland Eye Centre
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimated)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- IOL2012
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
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 Monofocal IOL
-
Alcon ResearchQueensland University of TechnologyRecruiting
-
Alcon ResearchRecruitingCataractCosta Rica, Panama, Mexico, Dominican Republic
-
Carl Zeiss Meditec AGCompleted
-
Peking University Third HospitalUnknown
-
Vienna Institute for Research in Ocular SurgeryRecruiting
-
Milton S. Hershey Medical CenterCompleted
-
Vienna Institute for Research in Ocular SurgeryRecruiting
-
Vienna Institute for Research in Ocular SurgeryRecruiting
-
Johannes Kepler University of LinzCompleted