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Sitting in front of a concave dome, a
computer-driven program flashes small lights at
different locations within the dome's surface, and you
press a button when you see the small lights in your
peripheral vision. Your responses are compared to
age-matched controls to determine the presence of
defects within the visual field. The test will detect any
loss of peripheral vision and provide a map of that loss
which will be helpful in diagnosing the cause.
Normal Results
The peripheral vision is normal in extent.
What Abnormal Results Mean
Abnormal results may indicate diseases or central
nervous system problems such as tumors that damage or
compress the parts of the brain that deal with vision.
Other diseases that may affect the visual
field of the eye include diabetes, hyperthyroidism (a
condition where the thyroid produces an excess of
hormones), hypertension, diseases of the pituitary
gland, and multiple sclerosis. |
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