Myopia Control Combined PBM With Myopic Defocus Lens in Children

Myopia Control Combined PBM With Myopic Defocus Lens in Children: Double-blind RCT for 6 Month

To study the efficacy of myopi control with two methods: low lever red light and peripheral defocus spectacles with four groups and design with prospective, double-blind, randimized, and with control for 6 month.

myopic children with age from 6 ~13 years old. And refraction from -0.50D~-5.50D.

The red light is low lever laser therapy at wavelength of 650nm.

Inclusion Criteria:

• Informed consent by the supervision of the children
• 6~13 years old (including both the 6 and 13)
• SE range: -0.50~-5.50D
• Astigmatism <=2.00D
• BCVA >=0.8
• Anisometropia <=1.50D
• Confirmed to no use of other myopia control intervention

Exclusion Criteria:

• Ocular lesions to effect vision or diseases (such as cataract, glaucoma, marcular pathology, cornea lesions, uveitis, retina detachment, congential opitc abnormal and etc.)
• Halo, glare, toutic, ADHD, psoriasis
• Systom disease: immune disease, central nerve system, Down syndrome, asthma, severe cardiopulmonary abnormal, severe liver and renal dysfunction.
• Squint, ocular lesion or acute imflammation.
• Other myopia control interventions within recent 3 month such as atropine, device, orthokeratology, multi-focus soft lens, multi-function spectacles.