Application type: Improve the function, train the ability of autonomous collection and dispersion results,comfortable to use,Simple and convenient Hold a life buoy card 40 cm from your eyes. Start with the two circles closest to the bottom. 1, set training: use the "eye" feeling to the line of sight on the area between the eye and the card, after the will feel, feel that there is a merd circle in the middle, maintain the state for 10 seconds, in turn, look up the distance of the larr circle to increase the difficulty, such as lar to not fuse, repeated training until each line of visual symbols can complete the . If you feel difficult, you can use the guide stick, the guide stick is placed between the trainer and the life buoy card, look at the guide stick and gradually move closer to the eye. 2. Spread training: Relax your eyes, look through the card and look at the distance behind the card. After , you will feel that a merd circle appears in the middle, maintain the state for 10 seconds, and then increase the difficulty training in turn. If you feel difficult, you can use the guide rod, the guide rod is placed behind the life buoy card, and watch the guide rod., Manufacturer: MMHHHG