The Effectiveness and Safety of Low-intensity Single-wavelength Red Light in Controlling High Myopia in Children and Adolescents：A Randomized, Controlled, Multicenter Clinical Trial

Objective: To study the effectiveness and safety of low-intensity single wavelength red light in controlling high myopia in children and adolescents.

Methods: Subject population: Children aged 3-16 years who have high myopia. Sample size: 190 subjects were planned to be enrolled and assigned to the test or control group in a 1:1 ratio.

Design: The trial was a randomized, controlled, multicenter clinical trial. A total of 190 children aged 3-16 years with high myopia were selected and divided into 95 cases in the test group and 95 cases in the control group. The test group was treated with the Eyesing Instrument developed by Suzhou Industrial Park Zoguan Medical Equipment Co. and conventional optometry. The safety and efficacy of the low-energy laser device in the test group were evaluated by comparing the changes in myopia between the two groups during the observation period. Subjects were screened after signing the informed consent form (performed as early as 7 days before the randomization), and the examination used for screening could use the results of eye examinations performed within 1 week at our hospital, and they were enrolled after confirming that they met the inclusion criteria. On the same day, the grouping was done by randomization, and the glasses were prescribed or the glasses were prescribed in combination with the device according to the grouping results. Visits were performed at 30± 14 days, 90± 14 days, 180± 14 days, 270± 14 days, and 365± 14 days

Eligibility Criteria:
Inclusion Criteria:

1. age 3 to 16 years (inclusive), male or female
2. clinical diagnosis confirming that myopia has occurred in at least one eye.
3. the guardian voluntarily signed the "Subject's Informed Consent Form"

   Exclusion Criteria:
   * history of photosensitivity, glaucoma, glaucoma syndrome, high intraocular pressure, macular lesion or injury in the fundus ② corneal curvature examination, the average K value of the anterior surface of the cornea ≥ 45; ③ combined with heart, liver, kidney and other systemic diseases and prior.

     * Combination of cardiac, hepatic, renal, and other systemic diseases and congenital myopia; ④ Combination of ocular trauma and congenital myopia.

       ④ Combined with ocular trauma and chronic ocular diseases such as apparently oblique or operated eyes, atopic keratoconjunctivitis, etc.; ⑤ Previous presence of entropion.

       ⑤ Those with previous entropion and other eye diseases such as severe corneal and conjunctival infections; ⑥ Those with combined neurological diseases and other eye diseases.

       (6) Those with combined neurological disorders and allergies or contraindications to atropine drugs or other therapeutic drugs; (7) Albinism and psoriasis.

       (7) Patients with albinism, psoriasis, nephrotic syndrome, systemic lupus erythematosus, diabetes mellitus, and other immune system and systemic diseases; (8) Epilepsy, psychiatric disorders.

       ⑧ epilepsy, mental disorders who cannot communicate normally.
       * Previously treated with other treatments to control the development of myopia such as anticholinergic drugs such as atropine within 3 months, or involved in other functional
       * Previously treated with other treatments to control the development of myopia, such as anticholinergic drugs like atropine within 3 months, or involved in other studies related to functional frame lenses, multifocal soft lenses, etc.

   Other conditions judged by the investigator to be unsuitable for participation in the study