Evaluation of Visual Performance With Contact Lenses

NCT ID: NCT03705130

Last Updated: 2018-10-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

26 participants

Study Classification

OBSERVATIONAL

Study Start Date

2018-06-14

Study Completion Date

2018-07-26

Brief Summary

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This study will evaluate the influence of contact lens optical design on visual performance using standard and multifocal soft contact lenses (MFCLs).

Detailed Description

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The study will examine visual acuity with various contact lenses, with and without glare source, in myopes between the ages of 18-39 years old (inclusive) to determine the effect of different multifocal optical designs on visual performance in the post-fit period.

Conditions

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Myopia

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

PROSPECTIVE

Study Groups

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Group 1

All subjects will wear the 3 contact lenses: Single Vision, Multifocal 1 and Multifocal 2.

Single Vision Contact Lens

Intervention Type DEVICE

Spherical Contact Lens worn on non-dispensing basis

Multifocal Contact Lens 1

Intervention Type DEVICE

Multifocal Contact Lens worn on non-dispensing basis

Multifocal Contact Lens 2

Intervention Type DEVICE

Multifocal Contact Lens worn on non-dispensing basis

Interventions

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Single Vision Contact Lens

Spherical Contact Lens worn on non-dispensing basis

Intervention Type DEVICE

Multifocal Contact Lens 1

Multifocal Contact Lens worn on non-dispensing basis

Intervention Type DEVICE

Multifocal Contact Lens 2

Multifocal Contact Lens worn on non-dispensing basis

Intervention Type DEVICE

Other Intervention Names

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comfilcon A comfilcon A etafilcon A

Eligibility Criteria

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Inclusion Criteria

* 18 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

Exclusion Criteria

* 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
Minimum Eligible Age

18 Years

Maximum Eligible Age

39 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Houston

OTHER

Sponsor Role lead

Responsible Party

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Eric R. Ritchey

Assistant Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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University of Houston

Houston, Texas, United States

Site Status

Countries

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United States

References

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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.

Reference Type DERIVED
PMID: 35121719 (View on PubMed)

Other Identifiers

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STUDY00000958

Identifier Type: -

Identifier Source: org_study_id

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