1 Week Crossover Dispensing Study Between Two Soft Contact Lenses

This is a prospective, bilateral, double masked (participant and investigator), randomized, cross-over dispensing study with 1 week wearing period in each arm by comparing visual acuity and subjective vision quality.

Inclusion criteria

• Are 8 to 18 years of age inclusive and have full legal capacity to volunteer;
• Have read and signed and dated the Parental Permission Form (for those aged 16 and younger); participant has read, signed and dated the study Information Consent Letter (if aged 17 or 18 years) or Assent (aged 16 and younger);
• Are willing and able to follow instructions and maintain the appointment schedule;
• Are habitual daily wearers of spherical single vision soft contact lenses to correct for distance vision in each eye;
• Currently wears spherical soft contact lenses or myopia control soft lenses;
• Have a pair of wearable back-up spectacles;
• Are willing and able to wear contact lenses for at least 10 hours a day, 6 days a week while in the study;
• Are myopic with subjective refraction: -0.75D to -7.00D spherical, with an astigmatism ≤ -0.75D in each eye with maximum spherical equivalent anisometropia of 1.00D
• Are correctable to a visual acuity of +0.10 logMAR or better (in each eye) with sphero-cylindrical subjective refraction;
• Have clear corneas with no corneal scars or any active ocular disease;
• Can be fit with the study contact lenses with a power between -0.75 and -7.00 DS; this translates to best corrected vision sphere refraction that vertexes to a CL power between -0.75 and -7.00 (inclusive) at screening visit.
• Demonstrate an acceptable fit with the study lenses.
• Demonstrate that they can safely and independently insert and remove contact lenses at the screening/fitting visit;

Exclusion criteria

• Have taken part in another clinical research study within the last 14 days;
• Are currently habitual wearers of toric lenses.
• Have worn any rigid contact lenses or ortho-keratology lenses in the past 30 days
• Are an extended lens wearer (i.e., sleeping with their lenses)
• Are on ongoing atropine treatment for myopia control
• Have a difference of > 1.0 D in best vision sphere subjective refraction between eyes;
• Have amblyopia and/or strabismus/binocular vision problem
• Have any known active ocular disease, allergies and/or infection;
• Have a systemic condition that in the opinion of the investigator may affect a study outcome variable;
• Are using any systemic or topical medications that in the opinion of the investigator may affect a study outcome variable;
• Have a known sensitivity to the diagnostic pharmaceuticals to be used in the study;
• Have undergone refractive error surgery or intraocular surgery;
• Are a member of CORE directly involved in the study.