외국의 사이트를 여러 군데 뒤져보았는데, 아래의 방법을 몇 군데서 추천하는군요.(검증된 방법 같음)
If you are playing a sport like racquetball, tennis, soccer or hockey, it is important that you be able to clearly see objects while you and/or the objects are moving fast. Without good dynamic visual acuity, you are going to have a difficult time in sports like these.
To improve dynamic visual acuity, cut different size letters out of a magazine and stick them on a stereo turntable and try to identify them (from about arm's length) at 33, 45 and 78 rpms.
As it gets easier, use smaller letters.
If you are playing a sport like racquetball, tennis, soccer or hockey, it is important that you be able to clearly see objects while you and/or the objects are moving fast. Without good dynamic visual acuity, you are going to have a difficult time in sports like these.
To improve dynamic visual acuity, cut different size letters out of a magazine and stick them on a stereo turntable and try to identify them (from about arm's length) at 33, 45 and 78 rpms.
As it gets easier, use smaller letters.
