Can AI protect Kids' eyesight where eye doctors are scarce?

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

1. School level: Inclusion Criteria: * The school is a regular public primary school located within a project county in Guizhou Province or Yunnan Province. * The school has the organizational capacity to conduct myopia screening and follow-up studies in children and adolescents, including the ability to coordinate screening organization, parent communication, informed consent collection, result feedback, and follow-up coordination. * The number of students in grades 1-3 in study school is sufficient to meet the requirements for conducting a cluster randomized study. Exclusion Criteria: * The school has implemented a similar systematic myopia intervention program within the past year that may affect the evaluation of study outcomes. * Student mobility is high, with a predicted high risk of transfer, missed visits, or loss to follow-up within 12 months. * There is a lack of accessible medical institutions near the school to support necessary cycloplegic examinations and related services. 2. Participant level: Inclusion Criteria: * Age of participants is 6-9 years (equivalent to grades 1-3 of primary school). * Participants can be able to complete baseline and follow-up examinations including visual acuity, non-cycloplegic autorefraction, and axial length measurements. * For participants who have previously received myopia control interventions such as low-dose atropine eye drops, defocus spectacle lenses, or red-light therapy, a washout period of at least 1 month is required prior to enrollment. Exclusion Criteria: * Baseline spherical equivalent refraction (SER) ≤ -10.00 D. * Presence of ocular or systemic diseases (including infections) that may affect visual acuity or refraction, or use of systemic or topical medications that may alter ocular status or affect ocular health. * Presence of any ocular conditions that preclude suitability for the interventions in this study, including but not limited to amblyopia, manifest strabismus, or current use of orthokeratology lenses. * Presence of any other condition that, in the investigator's judgment, makes the participant unsuitable for enrollment.