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.
一种防治视理疗器,它有作为物镜凸透镜、镜筒、目镜,还有头套和透镜组,它用于人们在上长时间用时戴在上,可以使被视物像清楚、放大和变远。
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.
一种防治视理疗器,它有作为物镜凸透镜、镜筒、目镜,还有头套和透镜组,它用于人们在上长时间用时戴在上,可以使被视物像清楚、放大和变远。
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