Optimization for Toric Contact Lenses

Starting soon · Not applicable

Conditions studied: Astigmatism, Ametropia

In brief

The aim of this study is to evaluate the agreement between subjective and objective toric lens prescriptions.

Key facts

Study ID

NCT07557030

Run by

CooperVision International Limited (CVIL)

People needed

45

Starts

2026-05-01

Expected to finish

2026-08-01

Last updated by the study team

2026-05-06

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• They are at least 18 years of age.
• They understand their rights as a research participant and are willing and able to sign a Statement of Informed Consent.
• They have spherical refractive error at the corneal plane between +4.00 to -7.00DS
• They have refractive astigmatism at the corneal plane of 0.75 to 2.25DC in one eye.
• They are able to achieve distance HCHL visual acuity of +0.10 logMAR or better in each eye
• They are a current soft contact lens wearer or have previous experience of successful soft contact lens wear in the past 3 years.

You may not qualify if…

• Is participating in any concurrent clinical or research trial.
• They have an ocular disorder which would normally contra-indicate contact lens wear.
• They have a systemic disorder which would normally contra-indicate contact lens wear.
• They are pseudophakic or aphakic.
• They have had corneal refractive surgery.
• They have any corneal distortion resulting from previous hard or rigid lens wear or have keratoconus.
• Is using any systemic or topical medications that in the opinion of the investigator may affect contact lens wear or a study outcome variable.

Where it is running

• Indiana University — Bloomington, Indiana, United States

Full record on ClinicalTrials.gov

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