Performance of DAILIES TOTAL1 Daily Disposable Contact Lenses in Habitual Soft Lens Wearers Who Report Substantial Digital Device Use (FOX)

The purpose of this study is to evaluate the performance of DAILIES TOTAL1 daily disposable contact lenses with regards to subjective symptoms (comfort, dryness, vision) in lens wearers who use identify themselves as substantial digital device users (at least eight hours of digital device use per day).

Study Overview

• Status: Completed
• Conditions: Myopia
• Intervention / Treatment: Device: Delefilcon A contact lenses

• Study Type: Interventional
• Enrollment (Actual): 41
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Canada
  • Ontario
    • Waterloo, Ontario, Canada, N2L 3G1
      • Centre for Ocular Research & Education

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

1. Are between 18 and 40 years of age (inclusive) and has full legal capacity to volunteer;
2. Have read and signed an information consent letter;
3. Are willing and able to follow instructions and maintain the appointment schedule;
4. Are a digital device user (at least 8 hours on a typical day using any combination of digital devices such as personal computer [PC], laptop, smartphone or tablet);
5. Are a habitual wearer of daily wear, spherical, soft contact lenses (no bifocal or multifocal contact lenses, no extended wear or monovision) for at least 5 days/week and at least 13+ hours/day on a typical day during the month prior to enrolment;
6. The habitual lens type brand will be restricted such that a maximum of 7 participants will be included in the study for each lens brand/material;
7. Have a vertex corrected spherical equivalent distance refraction within -0.50 Diopter (D) to -9.00D in each eye;
8. Have a vertex corrected refractive cylinder ≤ -0.75 cylindrical correction in each eye after vertexing to the corneal plane;
9. Demonstrate an acceptable fit and achieves best corrected visual acuity of at least 0.10 logMAR in each eye with DAILIES TOTAL1® contact lenses;
10. Are willing to wear DAILIES TOTAL1® contact lenses at least 5 days per week and 13+ hours per day throughout the study.

Exclusion Criteria:

1. Are participating in any concurrent clinical or research study involving intervention or invasive ocular tests;
2. Are presbyopic or habitually use a reading addition for close work;
3. Have any known active* ocular disease and/or infection; [* For the purposes of this study, active ocular disease is defined as infection or inflammation which requires therapeutic treatment. Mild (i.e. not considered clinically relevant) lid abnormalities (blepharitis, meibomian gland dysfunction, papillae), corneal and conjunctival staining and mild dry eye are not considered active ocular disease. Neovascularization and corneal scars are the result of previous hypoxia, infection or inflammation and are therefore not active.]

4. Meet the diagnosis of dry eye disease as per the following combination:

   1. Meets the symptom criteria of Contact Lens Dry Eye Questionnaire (CLDEQ-8) score ≥12

   2. And they show 1 of the following 2 signs:

      • Either sodium fluorescein (NaFl) staining (either [cornea >5 dots] or [conjunctiva >9 dots] or [lid margin >2mm length AND ≥25% width]);
      • Or non-invasive tear film break-up time (NITBUT) (no contact lens) <10 seconds.
5. Have a systemic condition that in the opinion of the investigator may affect a study outcome variable;+ [+ Any potential exclusion will be reviewed with the Lead Investigator or Principal Investigator prior to final decision making.]
6. Are using any systemic or topical medications that in the opinion of the investigator may affect a study outcome variable;
7. Are a current wearer of DAILIES TOTAL1® daily disposable contact lenses;
8. Have known sensitivity to the diagnostic pharmaceutical sodium fluorescein to be used in the study;
9. Have undergone refractive error surgery;
10. Are a member of the Centre for Ocular Research & Education (CORE) directly involved in the study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Refit; Refit and dispense participant with delefilcon A contact lenses and evaluate lens performance	Device: Delefilcon A contact lenses; Daily disposable silicone hydrogel contact lenses indicated for the optical correction of myopia and hyperopia; Other Names: DAILIES TOTAL1®

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Subjective Rating of Comfort After 8 Hours or More of Digital Device Use	Participants rate their overall comfort after 8 hours or more of digital device use on a scale from 0 (worst) to 100 (best).	Day 14+2
Subjective Rating of Dryness After 8 Hours or More of Digital Device Use	Participants rate their overall dryness after 8 hours or more of digital device use on a scale from 0 (worst) to 100 (best).	Day 14+2
Subjective Rating of Clarity of Vision After 8 Hours or More of Digital Device Use	Participants rate their overall clarity of vision after 8 hours or more of digital device use on a scale from 0 (worst) to 100 (best).	Day 14+2

Collaborators and Investigators

• Sponsor: University of Waterloo
• Collaborators: Alcon Research
• Investigators: Principal Investigator: Lyndon Jones, PhD, FCOptom, Centre for Ocular Research & Education

Study record dates

Study Major Dates

• Study Start (Actual): March 18, 2024
• Primary Completion (Actual): October 23, 2024
• Study Completion (Actual): October 23, 2024

Study Registration Dates

• First Submitted: March 6, 2024
• First Submitted That Met QC Criteria: March 6, 2024
• First Posted (Actual): March 13, 2024

Study Record Updates

• Last Update Posted (Estimated): October 31, 2025
• Last Update Submitted That Met QC Criteria: October 17, 2025
• Last Verified: December 1, 2024

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Eye Diseases; Refractive Errors; Myopia
• Other Study ID Numbers: 46091

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: Yes
• product manufactured in and exported from the U.S.: Yes