Evaluation of Visual Performance With Contact Lenses
1 other identifier
observational
26
1 country
1
Brief Summary
This study will evaluate the influence of contact lens optical design on visual performance using standard and multifocal soft contact lenses (MFCLs).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for all trials
Started Jun 2018
Shorter than P25 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
June 14, 2018
CompletedStudy Start
First participant enrolled
June 14, 2018
CompletedPrimary Completion
Last participant's last visit for primary outcome
July 26, 2018
CompletedStudy Completion
Last participant's last visit for all outcomes
July 26, 2018
CompletedFirst Posted
Study publicly available on registry
October 15, 2018
CompletedOctober 15, 2018
October 1, 2018
1 month
June 14, 2018
October 11, 2018
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Low Contrast Visual Acuity with Glare
Vision with contact lenses measured under low illumination conditions with glare source
Through study completion, an average of 3 hours
Secondary Outcomes (1)
Low Contrast Visual Acuity without Glare
Through study completion, an average of 3 hours
Study Arms (1)
Group 1
All subjects will wear the 3 contact lenses: Single Vision, Multifocal 1 and Multifocal 2.
Interventions
Spherical Contact Lens worn on non-dispensing basis
Multifocal Contact Lens worn on non-dispensing basis
Multifocal Contact Lens worn on non-dispensing basis
Eligibility Criteria
Subjects between the ages of 18-39 (inclusive) without significant ocular disease.
You may qualify if:
- to 39 years of age
- Best corrected visual acuity of at least 20/30
- Spherical equivalent refractive error in each eye of between -0.75 and -6.00 diopters sphere after vertexing to the corneal plane
You may not qualify if:
- Greater than -1.00 diopter of refractive astigmatism at the corneal plane
- Any active anterior segment disease, pathology, or surgery affecting vision, refraction, or the ability to wear a soft contact lens
- History of ocular trauma or surgery causing abnormal or distorted vision
- Current Rigid Gas Permeable (RGP) contact lens wearers
- Unwilling to have eyes photographed or video recorded
- Pregnant and/or lactating females, by self-report
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
University of Houston
Houston, Texas, 77204, United States
Related Publications (1)
Nti AN, Gregory HR, Ritchey ER, Wolffsohn JS, Berntsen DA. Contrast Sensitivity with Center-distance Multifocal Soft Contact Lenses. Optom Vis Sci. 2022 Apr 1;99(4):342-349. doi: 10.1097/OPX.0000000000001874.
PMID: 35121719DERIVED
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Design
- Study Type
- observational
- Observational Model
- CASE ONLY
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Assistant Professor
Study Record Dates
First Submitted
June 14, 2018
First Posted
October 15, 2018
Study Start
June 14, 2018
Primary Completion
July 26, 2018
Study Completion
July 26, 2018
Last Updated
October 15, 2018
Record last verified: 2018-10
Data Sharing
- IPD Sharing
- Will not share