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
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
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
。
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。
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