A physiotherapeutic apparatus for preventing and treating near sighted eye has a convex lens used as objective lens, lens cone, eyepiece, headgear and lens set.

 
  • 一种防治近视眼的理疗器,它有作为物镜的凸透镜、镜筒、目镜,还有头套和透镜组,它用于人们在近距离上长时间用眼时戴在眼上,可以使被视物的像清楚、放大和变远。
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