Which contact lens is better for your Child's nearsightedness?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Are 8 to 18 years of age (inclusively) * Have read, signed and dated: * Age 18 - The Participant Informed Consent Form (participant only) * Age 12-17 - The Parental Permission Form (participant and parent) * Age 8-11 - The Parental Permission Form (parent) and Assent form (participant) * 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, including myopia control soft contact lenses as below- * Currently wears spherical soft contact lenses or myopia control soft contact 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 contact 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 contact lenses. * Have worn any rigid contact lenses or ortho-keratology contact lenses in the past 30 days. * Are an extended contact lens wearer (i.e., sleeping with their contact 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 CORL directly involved in the study.