Clinical Comparison of Toric Contact Lenses Fit Characteristics

Alcon Research7 sites in 1 countryApril 2023

ConditionsAstigmatism Refractive Errors

Overview

Phase: Not Applicable
Intervention: Not specified
Conditions: Astigmatism
Sponsor: Alcon Research
Locations: 7
Primary Endpoint: Distance VA with study lenses
Status: Withdrawn
Last Updated: 2 years ago

Overview Investigators Eligibility Criteria Outcomes Sites Similar Trials

Overview

Brief Summary

The purpose of this study is to compare the fit characteristics between four Alcon commercially available toric contact lenses.

Detailed Description

Subjects will be expected to attend 3 visits including the screening visit. The total duration of a subject's participation in the study will be approximately 19 days.

Registry

clinicaltrials.gov

Start Date

April 2023

End Date

May 2023

Last Updated

2 years ago

Study Type

Interventional

Study Design

Crossover

Sex

All

Investigators

Sponsor

Alcon Research

Responsible Party

Sponsor

Eligibility Criteria

Inclusion Criteria

•Successful wear of toric soft contact lenses in both eyes for a minimum of 5 days per week and 10 hours per day during the past 3 months.
•Able to be fit with contact lenses within the available range of sphere, cylinder power, and axes (based on lens availability).
•Best Corrected Visual Acuity (BCVA) better than or equal to 0.10 (logMAR) in each eye.
•Willing to stop wearing habitual contact lenses during in-office visits.
•Other protocol-defined inclusion criteria may apply.

Exclusion Criteria

•Current spherical, monovision or multifocal lens wearer.
•Protocol-specified biomicroscopy findings at screening.
•Current or history of herpetic keratitis in either eye.
•Participation in a clinical trial within the previous 30 days or currently enrolled in any clinical trial.
•Other protocol-defined exclusion criteria may apply.

Outcomes

Primary Outcomes

Distance VA with study lenses

Time Frame: 30 mins (± 15 mins), each product

Visual Acuity (VA) will be assessed using letter charts with study lenses in place and reported in logarithm minimum angle of resolution (logMAR). A logMAR value of 0.0 equates to 20/20 Snellen, which is considered normal distance eyesight. Eyes will be assessed individually.