Status:
COMPLETED
Assessment of Three Basic Progressive Lens Designs
Lead Sponsor:
Western University of Health Sciences
Collaborating Sponsors:
Hoya Vision Care
Conditions:
Presbyopia
Eligibility:
All Genders
45-70 years
Phase:
NA
Brief Summary
This clinical trial investigates the differences between three different progressive addition lens designs. It is a non-invasive double-masked randomized clinical investigation. For this study, 80 par...
Detailed Description
The purpose of the study is to evaluate the preference, adaptability, and visual performance of three progressive lens designs. The difference in these lens designs is a variation of zone sizes for in...
Eligibility Criteria
Inclusion
- Age: 45 to 70 years old.
- Visual Acuity: far \& near monocular: cc ≥ 20/20 (decimal cc ≥ 1.0)
- Normal binocular vision (at distance \& near: no strabismus on cover testing, aligning prism of less than 2Δ horizontally or vertically, stereoacuity of 2' or better at distance and near).
- Prescription is in the range:
- Spherical power: less than +/-6.00 D
- Cylindrical power: less than -2.75 D
- Addition: 1.50 D - 2.50 D
- Difference in power (spherical equivalent) between eyes: less than 2.00 D
Exclusion
- Have never worn any progressive lens design.
- First prescription for progressive lenses.
- Prescription found during visit#1 varies from current prescription more than 0.50 D in any meridian.
- Currently wearing single vision lenses with accommodative support.
- Double vision or prismatic prescription in current glasses.
- Known ocular disease including strabismus, any pathology, any eye surgeries that may affect visual acuity.
- Use of systemic or ocular medications that are likely to affect vision.
- Balance problem/vertigo problem.
- Concurrent participation in other vision-related research.
Key Trial Info
Start Date :
December 9 2021
Trial Type :
INTERVENTIONAL
Allocation :
ACTUAL
End Date :
June 6 2022
Estimated Enrollment :
80 Patients enrolled
Trial Details
Trial ID
NCT05252871
Start Date
December 9 2021
End Date
June 6 2022
Last Update
August 15 2024
Active Locations (1)
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1
Western University of Health Sciences
Pomona, California, United States, 91766