Toric Contact Lens Digital Performance and Comfort Study

Completed · Not applicable

Conditions studied: Astigmatism

In brief

This study seeks to quantify digital visual performance and subjective visual acceptance of toric contact lenses as compared to spherical lenses in low to moderate astigmatic patients.

Key facts

Study ID

NCT04772560

Run by

Kathryn Richdale

People needed

30

Starts

2021-03-16

Expected to finish

2021-12-13

Last updated by the study team

2022-03-10

Who can join

Age: 18 and older, up to 39. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• 18 to 39 years of age (inclusive)
• pl to -6.00D vertexed sphere power and -0.75 to -1.50D vertexed refractive cylinder OD and OS
• Current/established full time (>6 days week, >8 hours/day) soft contact lens wearer
• Best corrected acuity of 20/25 or better in each eye
• Self-report of at least 4 hrs/day using digital devices
• Willing to wear lenses at least 8 hours each day during the study period
• Able to speak and read English at a high school level / have at least a high school diploma or equivalent (by self-report)
• Enclusion Criteria:
• History of ocular pathology or surgery
• Binocular vision disorder (i.e., tropia, convergence or accommodative insufficiency)
• Gas permeable lens wear for at least 3 months
• Symptomatic soft contact lens wearer (CLDEQ-8 score <12 at baseline)

Where it is running

• University of Houston College of Optometry — Houston, Texas, United States

Full record on ClinicalTrials.gov

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