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OpenTrials
Completed

NCT Number: NCT03705130

Evaluation of Visual Performance With Contact Lenses

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

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Key information

Conditions

Myopia Eye Diseases Refractive Errors

Age range

18 year–39 year

Sex eligibility

All sexes

Study type

Observational

Primary location

University of Houston

Houston, Texas, 77204, United States

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Single vision Contact lens

Device

Spherical Contact Lens worn on non-dispensing basis

Other names: comfilcon A

Multifocal Contact Lens 1

Device

Multifocal Contact Lens worn on non-dispensing basis

Other names: comfilcon A

Multifocal Contact Lens 2

Device

Multifocal Contact Lens worn on non-dispensing basis

Other names: etafilcon A

Primary outcomes

  1. Low Contrast Visual Acuity with Glare

    Time frame: Through study completion, an average of 3 hours

    Vision with contact lenses measured under low illumination conditions with glare source

Secondary outcomes

  1. Low Contrast Visual Acuity without Glare

    Time frame: Through study completion, an average of 3 hours

    Vision with contact lenses measured under low illumination conditions without glare source

Sponsors and collaborators

Lead sponsor

University of Houston

Other

Registry information

Important dates

Study start
2018
Primary completion
2018
Study completion
2018
First posted
Oct 15, 2018
Registry last updated
Oct 15, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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