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Visual field
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Vision from the corner of the eye
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If you see a rapid movement from the corner of your eye,
you automatically turn your head. This reflex allows us to react
quickly to possible dangers. Test how large your visual field is.
Please do not wear spectacles while doing the test.
Take a pen or pencil in your right hand and
hold it at arm’s length in front of your face. Cover your
left eye with your other hand. Look straight ahead and maintain your
gaze while slowing moving the pen or pencil to the right in an arc
movement while keeping your arm outstretched. Stop as soon as the
pen or pencil disappears from your visual field.
If your visual field is of normal size, your
arm should be at an angle of 90° to the position where you started
the movement. Now move your outstretched arm to the other side of
your body with the same movement until the pen or pencil again
disappears from your visual field. The angle should be slightly
less, around 60°, because the nose restricts the visual field more
on this side. If you have the impression that you are not reaching
the angles given, you should urgently consult an eye care professional. |
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