Repeated Red Light Therapy had been used as an amblyopia therapy for children as well as the myopia control in primary schools. However, ultra low lever of red light therapy with irradiance of 0.37mW and 0.60mW effectiveness and safety for 3\~ 6 year-old myopia treatment or slow myopia progression are seldom reported.
Repeated Red Light Therapy had been used as an amblyopia therapy for children as well as the myopia control in primary schools. However, ultra low lever of red light therapy with irradiance of 0.37mW and 0.60mW effectiveness and safety for 3\~ 6 year-old myopia treatment or slow myopia progression are seldom reported. Here we design this control and random prospective study to find the two types light with different irridance to two ages (3\~4 years old and 5\~6 years old) respectively. Wether the dose and effectiveness exit or not for 3\~6- year- old myopia control.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
60
Myopia indoor lighting therapy
Guangzhou Women and Children's Medical Center
Guangzhou, Guangdong, China
RECRUITINGMean changes of axial length vaules by millimeter at follow-up from baseline.
Ocular axial length measured by IOLmaster500 or Lenstar will be measured and recorded at follow-ups and at baseline. The changes values of axial length of both groups will be compared as the main outcome to compare the effectiveness of repeated red light thearpy.
Time frame: at 3-month and at 6-month
Numbers of children without myopic refraction changes by spherical equivalence values from refraction at follow-up from baseline(D)
Cycloplegic refraction changes from baseline will be measured and recorded at follow-up and at baseline. Spherical equivalence will be calculated with the formular of SE=spherical diopter+1/2cylinder diopter
Time frame: at 3-month and at 6-month
Number of Participants with unsafety issues during the study
Adverse event and device failure rate
Time frame: at 6-month
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