Comparison of Comfilcon A Toric Contact Lenses and Samfilcon A Toric Contact Lenses (NCT03519932) | Clinical Trial Compass
CompletedNot Applicable
Comparison of Comfilcon A Toric Contact Lenses and Samfilcon A Toric Contact Lenses
Canada49 participantsStarted 2018-04-30
Plain-language summary
The objective of this study is to evaluate the subjective acceptance of comfilcon A toric contact lens, compared to samfilcon A toric lens.
Who can participate
Age range
17 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Is at least 17 years of age and has full legal capacity to volunteer;
* Has had a self-reported oculo-visual examination in the last two years.
* Has read and signed an information consent letter;
* Is willing and able to follow instructions and maintain the appointment schedule;
* Is an adapted soft contact lens wearer, who currently wears contact lenses for a minimum 3 days/week and 8 hours/day AND who anticipates no difficulty wearing CLs for 6 days/week, 10 hours /day.
* Is willing to wear contact lens in both eyes for the duration of the study;
* Has a minimum astigmatism of - 0.75, determined by refraction;
* Can be fit with the two study contact lens types in the powers available;
* Has a distance visual acuity of 0.20 logMAR (approx 20/30) or better, determined by refraction;
* Can achieve a distance visual acuity of 0.20 logMAR (approx 20/30) or better in each eye with the study contact lenses.
* Has clear corneas and no active\* ocular disease
Exclusion Criteria:
* Is participating in any concurrent clinical trial;
* Has any known active\* ocular disease and/or infection;
* Has a systemic condition that in the opinion of the investigator may affect a study measure;
* Is using any systemic or topical medications that in the opinion of the investigator may affect a study measure;
* Has known sensitivity to fluorescein dye or products to be used in the study;
* Appears to have any active\* ocular pathology, ocular anomaly or severe insufficienc…
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.