薄薄的一个光学镜片戴在眼前立刻可使某些接近于盲的近视眼达到正常视力。这种毫无痛苦立刻奏效的传统矫正方法，即使科学进步的今天尚无一种医疗技术的效果能相媲美。尽管如此，它只是对眼屈光不正起到光学矫正作用，无论配戴多久仍然是戴上昭昭去掉昏昏，既未起到治疗效... A thin optical lens worn immediately before the eyes of some close to blind myopia to achieve normal vision. This traditional remedy, which works painlessly and immediately, will not be as effective as a medical technology today, even if science is progressing. In spite of this, it is only an optical correction to the refractive errors of the eye, no matter how long it is worn, it is still worn by Zhao Zhaoguang