When Should I Go To Ophthalmologist..!
How To Care About My Contact Lenses..!
Visual field test
Your visual field refers to how much you can see
around you, including objects in your peripheral (side) vision.
This test produces a
map of your complete field of vision. Visual field tests help your
ophthalmologist monitor any loss of vision and diagnose eye problems and
disease.
HOW IS A VISUAL FIELD TEST PERFORMED?
The test is performed with a large,
bowl-shaped instrument called a
TYPES OF VISUAL FIELD TESTS
There are two
main testing methods:
Moving Targets:
Lighted targets are moved from where you can’t see them (beyond your
side vision) in towards the center of your vision until you do see them.
As soon as the target appears in your field of vision, you press the
indicator button.
Fixed Targets:
Instead of targets moving into your field of vision, fixed targets
suddenly appear in different areas on the screen. When the targets
appear, you press the indicator button.
WHY ARE VISUAL FIELD TESTS IMPORTANT?
Initially,
visual field tests help your ophthalmologist diagnose problems with your
eyes, optic nerve or brain, including:
r
loss of vision;
r glaucoma;
r disorders of your retina
r Other neurologic conditions
including brain tumors, multiple sclerosis and increased intracranial
pressure.
r Visual field testing is used
to measure peripheral vision loss. The test is repeated at appropriate
time intervals to determine if vision loss is progressing or remaining
stable. If you are diagnosed with a particular disorder or disease, such
as glaucoma, visual field tests become a routine part of your treatment.
If you have any
questions about visual field testing or your vision, be sure to talk
with your ophthalmologist.