The purpose of this study is to determine the efficacy of different lens treatments (normal spectacle lens, ortho-K, \& Myovision) on myopia control in Chinese adolescent patients.
Different lens treatments include normal spectacle lens, orthokeratology, and Myovision (a specially designed spectacle lens commercially available with peripheral defocus controlled as relative myopia). This study is to evaluate the efficacy of these three methods in controlling myopia progression. Until now, there is no sufficient clinical evidences to compare different lens treatments.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
120
Normal spectacle lenses were used to correct myopia as the control group.
Myovision is a kind of specially designed spectacle glasses that could control the peripheral refraction of myopia patients. It is commercially available.
Orthokeratology lenses.
Ophthalmology Department of Peking University People's Hospital
Beijing, China
RECRUITINGChange of Ocular Axial Length
Ocular axial length (AL), which increases with age, will be measured 3 times by an IOLMaster. The first AL examination was considered as the baseline data, and will be repeated 6 and 12 months later.
Time frame: Baseline, 6 months, 12 months
Change of Spherical Equivalent Refraction
Spherical Equivalent Refraction (SER), which usually changes from time to time, will be measured 3 times by an open field auto-refractometer. The first SER examination was considered as the baseline data, and will be repeated 6 and 12 months later.
Time frame: Baseline, 6 months, 12 months
Xi Rong Wu, Dr.
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