Evaluation of Trifocal Diffractive Intraocular Lens After Cataract Extraction With Phacoemulsification
Overview
- Phase
- Phase 2
- Intervention
- Not specified
- Conditions
- Refractive Errors
- Sponsor
- Alexandria University
- Enrollment
- 36
- Locations
- 1
- Primary Endpoint
- Visual Acuity
- Status
- Completed
- Last Updated
- 5 years ago
Overview
Brief Summary
Multifocal IOLs that maintain distance focus and improve near vision have been developed to reduce spectacle dependence.Multifocal IOLs improve patient performance of near-vision tasks, such as reading crafts, hobbies, and social activities to a greater extent than do monofocal IOLs. However, halos and reduced contrast sensitivity have been associated with multifocal IOLs and are common reasons for patient's dissatisfaction.Trifocal technology has been developed to create intermediate focus to overcome these difficulties. Continuous reports of the visual outcomes of the FineVision trifocal IOLs are encouraging.
Detailed Description
Monofocal IOLs, which provide effective distance vision, currently account for the majority of IOLs implantations. Patients who have undergone cataract surgery with implantation of monofocal IOL may require spectacles to perform near-distance (e.g., reading) or intermediate-distance (e.g., using a computer) tasks depending on their visual demandsMultifocal IOLs that maintain distance focus and improve near vision have been developed to reduce spectacle dependence.Multifocal IOLs improve patient performance of near-vision tasks, such as reading crafts, hobbies, and social activities to a greater extent than do monofocal IOLs. However, halos and reduced contrast sensitivity have been associated with multifocal IOLs and are common reasons for patient's dissatisfaction.Trifocal technology has been developed to create intermediate focus to overcome these difficulties. Continuous reports of the visual outcomes of the FineVision trifocal IOLs are encouraging.
Investigators
Eligibility Criteria
Inclusion Criteria
- •patient eyes had cataract with no other pathology, patients desire for spectacle independence after surgery and with realistic expectation.
Exclusion Criteria
- •Any ocular comorbidity that affect the end results of the surgery, history of ocular trauma, irregular corneal astigmatism, pupil abnormalities and capsular or zonular abnormalities that may affect postoperative centration as tilt of the lens (e.g. pseudo exfoliation syndrome and Marfan's syndrome).
Outcomes
Primary Outcomes
Visual Acuity
Time Frame: 3 months
Current study used Sloan chart (Good - Lite Co, USA) for intermediate, Snellen chart for far and Landolt ring chart for near vision
Defocus curve
Time Frame: 3 months
examined monocular and binocular after correcting distant VA refractive error then inserting defocus lenses 0.50-D focus steps from (+1.50 to -3.50 D) in the trial frame
Secondary Outcomes
- Contrast sensitivity(3 months)
- Visual Satisfaction Questionnaire(3 months)