An observational study in Refractive Errors, sponsored by Alcon Research. Terminated at 12 sites in United States. Open to participants aged 7 Years and older. Per ClinicalTrials.gov, last updated 2025-07-20.
Sponsored by Alcon Research (part of Alcon) · Observational
The purpose of this study is to assess long term performance and safety of verofilcon A soft contact lenses in a real-world setting in a population of 7 years or older having at least 1 year of verofilcon A (sphere or toric) contact lens wear in a daily wear and daily disposable modality.
This study consists of a Baseline Visit and a Year 1 Visit.
The Baseline Visit is defined as the first office visit where an eye care professional provided an in-person office biomicroscopy exam to the subject before or during which a PRECISION1™ sphere or toric contact lens prescription was released. The Baseline Visit will be retrospective, with all assessments obtained from chart review.
The Year 1 Visit is defined as the visit that occurs 1 year (-2/+4 months) since Baseline during which period the subject is wearing test lenses of the same design in both eyes and a contact lens examination is performed during the visit. The Year 1 Visit may be prospective or retrospective.
417 studies on the registry are indexed under Astigmatism; 50 are open to participants now.
This study's enrollment of 140 is above the median of 100 across 82 observational studies indexed under Astigmatism.
Browse Astigmatism studies →Alcon Research is the lead sponsor of 624 studies on the registry; 9 are open to participants now.
Of its 112 completed or terminated interventional studies of FDA-regulated products, 102 (91%) have results posted.
Compared within Astigmatism, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Refractive Errors. The counts are of registry records indexed under each term, refreshed daily. How we classify →
Subjects will be recruited from clinical sites located in the United States.
Key Inclusion Criteria:
Key Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Verofilcon A spherical soft contact lenses worn in both eyes in a real-world setting
Device: Verofilcon A spherical soft contact lenses
Verofilcon A toric soft contact lenses worn in both eyes in a real-world setting
Device: Verofilcon A toric soft contact lenses
Silicone hydrogel contact lenses prescribed for single use, daily disposable wear (less than 24 hours while awake) for the correction of ametropia (myopia or hyperopia)
Also known as: PRECISION1™
Silicone hydrogel contact lenses prescribed for single use, daily disposable wear (less than 24 hours while awake) for the correction of ametropia (myopia or hyperopia) with astigmatism
Also known as: PRECISION1™ for Astigmatism
Distance Visual Acuity with Study Lenses at Baseline
Visual acuity (VA) assessed per the investigator's standard of care with study lenses in place.
Time frame: Baseline
Distance Visual Acuity with Study Lenses at Year 1 Follow-Up
Visual acuity (VA) assessed per the investigator's standard of care with study lenses in place.
Time frame: Year 1
Incidence of Corneal Infiltrative Events
A corneal infiltrate is a single or group of inflammatory cells in the normally clear cornea.
Time frame: Up to Year 1
Incidence of Microbial Keratitis
Microbial keratitis is a sight-threatening infection of the cornea.
Time frame: Up to Year 1
Plan to share: No
No publications or documents are linked to this record.
This study is terminated, as verified in Jul 2025. You cannot join it, but the record below documents what was studied.
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