At present, adolescents and children read or write with their eyes without attention or insufficient lighting and other factors, so that the ciliary muscle is often in a state of continuous tension contraction, thus causing ciliary muscle spasm, regulation function decline, the lens becomes more convex after the stronger flexion, its focus no longer falls on the retina, but in front of the retina, resulting in blurred vision; if the spasm of the ciliary muscle can be lifted, the lens can be restored If the spasm of the ciliary muscle is released, the lens can be flattened and the image can be formed clearly on the retina, which is medically called pseudomyopia. Pseudomyopia is generally binocular, and the refraction of myopia is often unstable, and may be higher when looking close for a long time and lower after rest. Pseudomyopia is a temporary refractive change, one is to use eye drops such as atropine or double star to paralyze the ciliary muscle, or use acupuncture treatment (pulse) to relax the adjustment function, the refractive power of pseudomyopia will gradually reduce, and finally gradually disappear, restoring the original calm refractive state.