How to improve your dynamic vision, how to improve your eyes.
What is the “ability to see” that is essential for sports?
- muscle strength?
- instantaneous force?
There are various functions of the eye, and these are collectively called vision. In addition to visual acuity (the ability to distinguish the shapes of objects), visual field (the ability to see a wide field of vision), optical sense (the ability to sense light), binocular vision (the ability to see things three-dimensionally with both eyes), and color vision. (the ability to distinguish colors), accommodative power (the ability to adjust to see things from afar to near objects), etc., and has a broader meaning than eyesight.
We take in most of the information that forms the basis for instantaneous situational judgment and accurate reading necessary for sports through our eyes (sight). If you are feeling uneasy or dissatisfied with your abilities right now, it is possible that you are not seeing the movement of the ball or people accurately.
Athletes receive external information from various "senses" such as sound, light, and touch. Among them, it is said that more than 80% of information is obtained through the eyes.
In order to take action, the information obtained from the eyes reaches the brain, and when the brain decides "Let's act", the command to "move" is transmitted to the muscles, and the action starts. During this time, it is a short time of about 0.1 seconds. Visual functions are so important that it is said that sports are the eyes.
A soccer team doctor said, "I learned that a player's performance is not necessarily proportional to the amount of practice." People who are bad at practicing are bad at it, and even if they try hard, there is a limit. So what is it affecting? When he was worried and searching, he noticed that comprehensive visual function is important for playing sports.
Super play is born only with excellent vision!
So what kind of visual abilities do athletes need?
1) static vision
This is the most basic ability, commonly referred to as "visual acuity". This is the visual acuity that is measured in the school health checkup and the vision test when making glasses. This visual acuity test is based on how accurately the target's "Landolt's ring" can be seen when both you and the target are "still". In other words, it is officially called "static vision" because it sees a stationary object while standing still.
Static vision is essential for safe and accurate movement in all sports.
2) dynamic visual acuity
Visual acuity is the ability to keep a moving target in the line of sight. In sports, targets such as the ball and opponents are constantly moving, and the ability to quickly focus both eyes on the target is important. Top athletes in the sports world are always training to improve their dynamic vision. In the case of table tennis, the kinetic vision of top table tennis players is extremely excellent, as it is trained by concentrating on the ball and chasing its movements in a fast rally.
This dynamic visual acuity includes dynamic visual acuity when seeing an object approaching the eye in a straight line and dynamic visual acuity when seeing an object moving sideways in front of the eye.
3) eye movement
There are six muscles on the outside of the eye (extraocular muscles) that control the direction of vision (line of sight).
In order to track a fast-moving target with the eyes, the ability to move the eyes quickly "eye movement" is indispensable. Speedy eye movements are required in many sports, including ball games such as baseball, tennis, table tennis, volleyball, and basketball. For example, in soccer, a player who acts as the commander-in-chief of a team's offense is constantly moving his eyes to grasp the surrounding situation.
4) deep vision
Depth vision is the ability to judge distance and three-dimensionality among the eye's abilities called binocular vision.
In ball games such as soccer, it is important to have a three-dimensional effect and a sense of distance, such as the positions of yourself and the ball, the positions of your teammates and opponents, and the distance to the goal. Athletes with good depth perception can instantly see who is farther away from another, how many meters away they are, and where the space is. The positional relationships of multiple people and objects seen on a plane are replaced in my mind like a bird's-eye view.
Also, in golf, the "sense of position in space" plays an extremely important role, and deep vision is at the center of that sense.
5) Instantaneous vision (visual reaction time)
"Instant vision" is to input what you see into your brain in an instant. In basketball, he moves quickly and makes an accurate pinpoint pass, in soccer, he kicks a shot through a mixture of teammates and opponents, reacts to a small ball flying over the ping-pong table, and in baseball, the batter instantly detects the rotation of the ball. As you can see, sports are a series of situations where you have to make momentary judgments. In other words, it is important to have the ability to recognize many targets that are visible in a moment.
6) Emphasis on eyes and hands/feet
It is the ability to respond with hands and feet to targets captured by the eye. A soccer goalkeeper, for example, needs this ability to react and quickly reach an incoming ball.
In this way, in sports, accurate movements are produced by the correct functioning of multiple visual abilities.
Static vision that cannot be enhanced by regular training.
Most visual abilities can be improved with training, but some are difficult.
It's "static vision".
"Static vision" is said to be irreversible once myopia is reached, and doctors recommend correcting it with glasses or contacts. Visual acuity, which is the ability to distinguish the shapes of objects, or in other words, static vision, deteriorates, leading to problems in daily life, such as difficulty reading blackboards, and in sports, it is difficult to see the surroundings and perform correct actions. .
In addition, the more intense the movement, the less blood is circulating in the eyes and brain, and the worse the vision becomes. Visual acuity will inevitably deteriorate when looking at moving objects. For example, when a person with a static visual acuity of 1.0 sees an approaching target at 30 km, his visual acuity drops to about 0.6 to 0.7.
Most sports events do not have visual acuity requirements, but in one experiment, when athletes' visual acuity was lowered, their sports performance significantly decreased after reaching a threshold of 0.7. In order to play sports safely and accurately, it can be said that the ideal visual acuity is 1.2 to 1.5 in both eyes, at least 0.7 or more.
In addition, "dynamic visual acuity" and "depth visual acuity" improve with training, but they are closely related to "static visual acuity". For example, dynamic visual acuity is about half of static visual acuity when you see an object coming toward you at 100 km. Conversely, if your static vision improves, your dynamic vision will also improve.
When each of the six visual abilities mentioned above is measured and judged on a five-point scale, all top athletes in ball games have excellent overall scores for the six visual functions.
People who are concerned about their vision can correct their vision with glasses or contact lenses, but it interferes with playing and is dangerous in intense sports.
What is an ultrasonic therapy device that is effective in improving static vision?
So, what should we do if the visual acuity of both eyes is 0.7 or less due to visual acuity deterioration?
LASIK surgery can be considered, but there is an age limit, generally from 20 years old to 50 years old. Because LASIK is a surgery to reshape the cornea, there is a possibility that the expected visual acuity recovery effect may not be obtained for children under the age of 20, when the eyeball itself is still in the growth stage. It is said that the success rate is high, but even if it is close to 100%, there is always the anxiety of unexpected trouble.
Therefore, I would like you to try the ultrasonic therapy device "I-Power". It has a proven track record in improving eyesight and has been trusted for many years as a medical device approved by the Ministry of Health, Labor and Welfare. It is also safe and has no side effects.
The eye is a very fine organ. Therefore, ultrasound used for treatment by direct projection to the eye must be absolutely safe and free of side effects. This is mandatory.
The low frequency band longitudinal wave ultrasound used in the ultrasonic therapy device "I-Power" has the following characteristics.
- The acoustic output is extremely weak even in ultrasonic waves.
- The oscillation frequency is an appropriate low-band frequency oscillation frequency corresponding to the natural oscillation frequency of human living tissue cells.
- Vibrations are deeply absorbed by tissue cells without resistance and cause no damage.
In this way, the greatest merit of vision restoration treatment with an ultrasonic therapy device is that it is completely safe and has no side effects.
In a clinical trial of an ultrasonic therapy device, patients aged 10 years or older with pseudomyopia or true myopia for more than two years were treated with ultrasound for 10 minutes each time, 20 times at intervals of 1 to 2 days. It is said that the treatment was performed by projecting sound waves. As a result, visual acuity improved in 2 to 3 weeks, and many people improved their visual acuity immediately after the first projection.
Training method to improve visual function!
Static vision cannot be improved by regular training.
Refractive errors such as nearsightedness, farsightedness, and astigmatism, which are the causes, need to be corrected with glasses or contact lenses. Even in daily life, if you face a computer for a long time, your eye muscles will stay tense for a long time, and your eyes will get very tired. Your eyes need rest too. Also, looking at plants, flowers, and distant scenery in the natural world will give your eyes a rest.
As a vision correction method that is safe and has no side effects, there is a vision recovery method using an ultrasonic therapy device.
○ Look at signs and station names from the train window.
A popular training for dynamic vision is to read signs and station names outside the train. You can move your neck at first, but once you get used to it, read only by moving your eyes. *A few minutes a day is enough to keep your eyes from getting tired.
○ Read the letters pasted on the ball.
What to bring/basketball or volleyball or other big ball. 5 cm size colored paper, 5 cm size paper with letters and figures written on it.
How to practice / Tape a 5 cm square of paper to the ball. Start with colored paper, then move on to shapes and letters. Call the colors, shapes, and letters on the ball by throwing it upwards and receiving it. If two people play catch, they can practice at the same time. *Practice time is about 5 minutes.
○Follow the thumb nail.
Raise your right (left) hand to eye level and extend your arm fully. Make a fist, point your thumb toward the ceiling, and look at your thumb nail. Keeping your arms outstretched, slowly move your hands left and right, up and down, and diagonally. Or move it in a circular motion. Keep your head still and your eyes on your thumb nails. Instead of staring blankly, look sharply in focus. It is more effective to stick small numbers or letters of the alphabet on your nails. * It is OK in about 2 minutes a day to the extent that your eyes do not get tired.
○ Follow an object in the air with your eyes.
Supplies/softball, string, ceiling hook, 1.3 cm cutout letters.
Practice method/Paste 12 kinds of letters on the ball. Suspend it from the ceiling 180-240 cm in front of where you are standing, just at eye level. Swing the ball in an arc from left to right. Call as many letters as possible while the ball moves through the field of view. Only the eyes move. *Practice time is about 5 minutes.
○ Always look at the scenery with a sense of distance.
I always use my eyes to measure the distance. Which is the front, which is the back, how many meters is the target, etc.
○ Accurately estimate the position in space.
Things to prepare/straws, thin bamboo combs.
How to Practice/Have a friend or coach hold the straw a short distance away from you. Hold the bamboo stick on the right side of the straw. Both eyes are concentrated on the straw, and the bamboo comb is hardly seen. Then, insert the bamboo gushi into the straw. * Repeat for about 1 minute of practice time. When you hold the straw yourself, you can feel its position in your hand, so you don't train your eyes.
○ Grasp the information in magazines instantly.
Instantly open a newspaper or magazine and try to remember what was written and what kind of picture it was.
It has been confirmed that instantaneous vision can be improved by training.
○ Memorize background information.
When walking, suddenly look behind and turn around immediately. When you look back, try to remember a lot of what kind of buildings there were, what kind of people there were, and what kind of scenery the city looked like.
○ Catch the left and right balls at the same time.
Hold the ball in each hand spread to the left and right, and throw it up at the same time to catch it. At this time, look at the ball around. You will be able to do it while walking or running slowly.