Effect of Light-Blocking Lenses on Pediatric Hyperopia

Inclusion Criteria: * Aged 6 years or older and 12 years or younger; * Spherical refractive error in both eyes between +3.0 D and +7.5 D, cylindrical refractive error between -2.0 D and 0 D; interocular difference in spherical power less than 1.5 D and in cylindrical power no greater than 1.0 D; * Best-corrected visual acuity of 0.0 logMAR or better in both eyes; * Ocular deviation with spectacles less than 10 prism diopters; * Has been wearing standard single-vision spectacles regularly for more than six months; * In good general health, capable of receiving the study intervention, and willing to comply with the study protocol; * Written informed consent obtained from both the parent/guardian and the child, with agreement to comply with all study procedures and maintain follow-up availability throughout the study period; Exclusion Criteria: * History of ocular trauma or eye surgery; * Presence of pathological abnormalities on anterior or posterior segment examination, or a history of organic ocular diseases such as cataract, glaucoma, corneal disease, or fundus disorders; * Intraocular pressure greater than 21 mmHg; * Presence of systemic diseases or other conditions deemed unsuitable for study participation; * Any other condition deemed inappropriate for participation in the clinical trial by the investigator;