Advanced Technology for Myopia Control in Children and Young Adults

Myopia, or nearsightedness, is increasing rapidly worldwide, especially in children and young adults. This study will test two advanced treatments for slowing myopia progression with one control group: special lenslet spectacles (Stellest with HALT technology) and violet excitation filter glasses (wavelength 420 nm) and Single vision lenses for controls. The study will enroll 90 participants aged 8 to 20 years from schools and universities in Faisalabad, Pakistan. Participants will be randomly assigned to one of three groups: lenslet spectacles, violet filter glasses, or single vision lenses (control group). Visual acuity, contrast sensitivity, Spherical Equivalent and axial length will be measured at the start and again after 3, 6, and 9 months and one follow up after cessation of treatment. The study aims to determine whether these advanced technologies can effectively slow myopia progression compared to standard glasses, providing head-to-head evidence on emerging and established optical interventions for myopia control.

Inclusion Criteria: * Diagnosis of axial myopia (high, moderate, or severe) * Age between 8 and 20 years (inclusive) * Male or female * Willingness to wear prescribed glasses as instructed * Willingness to attend all follow-up visits (3, 6, and 9 months) * Written informed consent from participant or parent/guardian for minors Exclusion Criteria: * Any ametropia other than axial myopia (e.g., hyperopia, astigmatism \>1.50D) * Current contact lens users * Prior or concurrent myopia treatment other than study interventions * Any ocular disease (e.g., cataract, glaucoma, retinal disorders) * Any systemic disease affecting vision (e.g., diabetes, Marfan syndrome) * History of any ocular surgery * Allergic or physical intolerance to glasses materials * Non-cooperative patients unwilling to comply with study procedures