Visual Outcomes for Toric Efficacy Study

Completed · Not applicable

Conditions studied: Astigmatism, Myopia

In brief

This is a crossover study of two types of contact lenses (toric orthokeratology and soft multifocals). Primary aims are to quantify correction of astigmatism, subjective and objective visual performance, aberrometry, peripheral refraction and bacterial bioburden between toric orthokeratology and soft toric multifocal contact lenses.

Key facts

Study ID

NCT03728218

Run by

University of Houston

People needed

34

Starts

2018-10-12

Expected to finish

2020-03-19

Last updated by the study team

2020-07-14

Who can join

Age: 18 and older, up to 39. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• 18 to 39 years of age (inclusive)
• Able to read and understand the study informed consent
• Plano to -5.00 D (inclusive) vertex corrected sphere power in each eye
• 1.25 to -3.50 D (inclusive) vertex corrected astigmatism in each eye
• Best corrected acuity of 20/25 or better in each eye
• No history of ocular pathology or surgery
• No significant binocular vision or accommodation abnormality (i.e. strabismus, amblyopia)
• No gas permeable lens wear for at least 1 month
• No systemic or ocular contraindications for contact lens wear
• Not pregnant/lactating (by self-report)

You may not qualify if…

• Adults unable to consent
• Individuals who are not yet adults (infants, children, teenagers)
• Prisoners
• Students for whom one of the principal investigators have direct access to/influence on grades would be consented and seen by another investigator for all visits.
• Pregnant/lactating women (by self-report)

Where it is running

• University of Houston — Houston, Texas, United States

Full record on ClinicalTrials.gov

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