EYE HAND COORDINATION

OUTLINE

April 19, 2023EYE-HAND COORDINATION

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Eye Hand Coordination Concept1

Eye Hand Coordination Medical Background2

Eye Hand Coordination Applications

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Eye Hand Coordination Test

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Eye Hand Coordination Recommendations4

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EYE HAND COORDINATION CONCEPT

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EYE HAND COORDINATION

In the public debate eye-hand coordination is often cited as the most important skill for playing action games and becomes the first line of defence for the position that you can learn from games

It is the process of coordinating movements of the eyes and hand/arm system so that they both move toward the same target.

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EYE-HAND COORDINATION

EYE HAND COORDINATION (CONT.)

This skill is often demonstrated through activities such as stringing, lacing, and cutting.

The development of eye-hand coordination begins around the age of eight to fourteen months as children begin to attempt to pick up objects they see. Eye-hand coordination continues to develop throughout the early elementary years.

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EYE-HAND COORDINATION

EYE-HAND COORDINATION TASKS

Hand-eye coordination involves four tasks:

Identification of the object to be manipulated.

Ballistic arm motion to the surrounding area of the object.

Pre-shaping and alignment of the hand.

Manipulation or grasping of the object.

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EYE-HAND COORDINATION

EYE HAND COORDINATION MEDICAL BACKGROUND

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EYE

The eyes are a major part of hand-eye coordination.

They see much around us.

However the eyes don’t really see objects. They actually see the light that the objects reflect or give off.

The light rays enter the eyes through transparent tissues and the eyes change the rays into electrical signals that are sent to the brain, which interprets them as visual images.

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HAND

To reach for an object, the brain identifies the objects images in both retinas and finds its directions relative to the two foveae.

To compute the objects location relative to the reaching arm, the brain must consider both eyes' orientations in the head, and the position of the head itself, whose rotation changes the distance between the eyes and the shoulder

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EYE & HAND

It is known that people reach more accurately when the eyes look straight at the target, rather than right or left of it. This happens even in darkness when the target and hand are no longer visible.

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EYE HAND COORDINATION IMPORTANCE

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IMPORTANCE

Eye-hand coordination is a very important skill for several reasons. First, many self-help skills, such as tying shoes and buttoning coats, require well developed eye-hand coordination.

In addition, more advanced skills, such as writing and cutting, also require proficiency in this area.

As adults, we rely on well-developed eye-hand coordination on a daily basis. Driving a car and using a computer are just two of the ways adults use eye-hand coordination.

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EYE-HAND COORDINATION

EYE HAND COORDINATION APPLICATIONS

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APPLICATIONS

Hand-eye coordination makes a big difference in our lives.

We need good eye–hand coordination to reach out and pick up a coffee cup, press a doorbell, or catch a ball.

Surgeons wouldn’t be able to perform delicate surgeries

Construction workers wouldn’t be able to swing a hammer or make cuts accurately without it.

Examples of tests of hand-eye coordination involve aiming (dart throwing), tracking (rotary pursuit), and tracing (mirror tracer, and two arm-coordination test).

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EYE-HAND COORDINATION

APPLICATIONS (CONT.)

Relates to ball skills, handwriting, cutting with scissors, and drawing

There are many different types of materials and activities that are designed to promote eye-hand coordination skills. Such lace cards, Stringing beads, Pegs and pegboards, Nesting boxes, Stacking cones, Puzzles, Scissors

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EYE-HAND COORDINATION

BE A SURGEON!

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EYE-HAND COORDINATION

BE A DENTAL!

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EYE-HAND COORDINATION

BE A RADIOGRAPHER!

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EYE-HAND COORDINATION

BE A PILOT!

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EYE-HAND COORDINATION

BE A FOOT BALL PLAYER!

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EYE-HAND COORDINATION

EYE HAND COORDINATION RECOMMENDATIONS

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RECOMMENDATIONS

To enhance your eye-Hand Coordination; take the following into account:

Both hands should be fully utilized.

The two hands should begin and end their motions at the same time.

The motions of the hands and arms should be symmetrical and simultaneous.

The work should be designed to emphasize the worker’s preferred hand.

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EYE-HAND COORDINATION

RECOMMENDATIONS (CONT.)

The worker’s two hands should never be idle at the same time.

Method should consist of smooth continuous curved motions rather than straight motions with sudden changes in direction

Use momentum to facilitate task

Take advantage of gravity – Don’t oppose it.

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EYE-HAND COORDINATION

EYE HAND COORDINATION TEST

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EQUIPMENT

Scoring Mirror Tracer: Measures an individual's basic level of function in the areas of color identification, shape and size discrimination, eye-hand coordination, understanding of spatial relationships, and ability to follow verbal instructions

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SCORING MIRROR TRACER

1. An aluminum base with a non-conducting black (six pointed) star anodized into surface.

2. Hinged to one edge of the base is a mirror-finish plate of almost the same size.

3. Shield " 3rd plate " which operator adjusted by means of two supporting posts

4. Pencil-shaped stylus is electrically connected to one edge of base plate.

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PROCEDURE

1. The student is asked to trace the pattern on the base

plate by four different ways: Clockwise direction using dominant hand Counter clockwise direction using dominant hand Clockwise direction using non dominant hand Counter clockwise direction using non dominant hand.

2. The student is asked to trace the pattern among

different locations different to the reaching arm Straight forward 40 degrees to the left 40 degrees to the right

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RESULTS (1)

Trail #Total Time No. of Errors

1 2 3 4 5 1 2 3 4 5

Dominant hand in C.W.D

Dominant hand inC.C.W.D

Non-Dominant

hand in C.W.DNon-

Dominant hand inC.C.W.D

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RESULTS (2)

Trail #Location to

the reaching arm

Total Time No. of Errors

1 2 3 4 5 1 2 3 4 5

Straight

40 degrees right

40 degrees left

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QUESTIONS

Calculate the average time and average # of error for

each trial

Compare between average time and average # of

error for both trials (use bar chart)

Find the correlation between time and # of errors

obtained (use scatter diagram)

What are your observations? Discuss.

Name major practical applications on hand-arm

coordination

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April 19, 2023EYE-HAND COORDINATION