Dynamic Visual Acuity
Good dynamic visual acuity means to be able to clearly see objects while you and/or the objects are moving fast.

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.

Visual Concentration
Visual Concentration is the ability to screen out these distractions and stay focused on the target (moving/stationary).

To improve your concentration, practice your sport while a friend is standing nearby waving his or her arms and moving at erratic intervals. You can also practice in a darkened room with a strobe light pulsating slowly. These exercises can help your eyes to remain fixed on their target in spite of other movement around you.

Eye Tracking
Eye tracking helps you maintain better balance and react to the situation more quickly.

One way to improve eye tracking is to keep a book balanced on your head while following the flight of a ball or object that is thrown or hit.

With the book on your head, you can also follow a softball as it rolls slowly around the inside of a Frisbee. After you master the softball, replace it with a faster moving baseball and then an even faster moving golf ball.

Eye-Hand-Body Coordination
Eye-Hand-Body Coordination is how your hands, feet and body and other muscles respond to the information gathered through your eyes.

To improve your eye-hand-body coordination, try jumping up and down on an old mattress while someone tosses a tennis ball to you from a variety of unpredictable angles. Catch it and toss it back.

You can also paste a small target on a stereo turntable and try to accurately touch the target with a pointer at speeds of 33, 45 and 78 rpm. As you improve, you can make the target smaller.

Visual Memory
Visual Memory helps you remember a fast moving, complex picture of people and things.

To improve your visual memory, try paging through a magazine, glancing briefly at each visually complicated ad or illustration, then turning the page and reconstructing the images from memory. When this becomes easy, wait 5 seconds (then 10, etc.) before starting to reconstruct the image.

Visualization
Visualization is the skill that enables you to see yourself performing well in your "mind's eye" while your eyes are seeing and concentrating on something else.

To improve your self or to achieve something, just visualize doing so. Using scanning techniques, researchers have found that the same areas of the brain that light up during performance also do so when you visualize the performance.

Peripheral Vision
Peripheral Vision is seeing something out of the corner of eye. (or vision at periphery)

To increase your ability to see things while you are not looking directly at them, try watching TV with your head turned to one side and then the other. If you are watching a game live, you can turn your head to one side and see if you can still follow the action.

Visual Reaction Time
Visual Reaction Time is the speed with which your brain interprets and reacts to an event or an action.

Stand with your back to a friend. Have that person carefully throw a baseball or football and yell "now." When you hear the yell, turn around, find the ball and try to catch it. If you do this repeatedly, you can train your brain to interpret and react faster.

Focus Flexibility
Focus Flexibility is the split second that it takes you to change focus from an object far away to one near you.

To improve focus flexibility, post a newspaper page on a wall at eye level about 15 feet away from you and hold a similar one in your hand about 15 inches from your face, at the same height but slightly to one side, so you can see both pages. Focus on a headline on the page on the wall and then try to quickly change to focus on the page near your face. Keep changing focus back and forth and you will improve your ability to change focus quickly. If you find it getting easier, move the paper in your hand closer to your face.

Depth Perception
Depth Perception enables you to quickly and accurately judge the distance between yourself and other objects.

You can work to improve depth perception by having a friend hold a straw about two feet in front of you, parallel to the ground. Practice inserting a toothpick into the hole.

For more information:

• American Optometric Association

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