Effect of Diffusion Optics Technology (DOT) Spectacle Lenses on Choroidal Thickness

Inclusion criteria

• Are 8-14 years of age;
• Are able to read (or be read to), understand and sign the assent document;
• Are accompanied by a parent or legal guardian who is able to read, understand and sign the parental information and permission document;
• Are emmetropic by non-cycloplegic auto-refraction, which means both refractive meridians should be within +1.00D and -1.00D inclusively;
• Are willing and able to follow instructions.

Exclusion criteria

• Are participating in any concurrent interventional clinical or research study;
• Have a history of myopia control treatment in the past year;
• Have amblyopia in either eye or known to have any other binocular vision disorder, such as accommodative insufficiency;
• Have any known active ocular disease and/or infection;
• Have a systemic condition that in the opinion of the investigator may affect a study outcome variable. Examples include diabetes mellitus, hyperthyroidism;
• Are using any systemic or topical medications that in the opinion of the investigator may affect a study outcome variable. Examples include Atropine eye drops;
• Have undergone strabismus surgery, refractive error surgery or intraocular surgery;
• Are a child of a member of the study team.