护眼灯有用吗?

因孩子的眼睛近视了?我想给孩子买一台护眼灯,但不知是否真的有用? 护眼灯无频闪，而一般的荧光灯由于通的是交流电光线会不停的闪烁，只是眼睛察觉不出来而已，但长期下去会造成视力下降。护眼灯经过

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