Diagnostic Testing

Question 1

Which area on the visual field print-out is likely to reveal generalized depression in a patient with a cataract?

Answer 1

The total deviation plot

Question 2

What does the pattern deviation plot do?

Answer 2

Removes excess ‘noise’ to show true defects

Question 3

How does the pattern deviation plot assist in visual field analysis?

Answer 3

It determines the size, shape, and depth of a visual field defect

Question 4

What does the Visual Field Index (VFI) indicate?

Answer 4

Overall amount of field loss

Question 5

What is the range of the Visual Field Index (VFI)?

Answer 5

100% (normal) to 0% (blind eye)

Question 6

True or False: The VFI is more affected by cataracts than the total deviation plot.

Answer 6

False

Question 7

What can the VFI be used for?

Answer 7

To monitor progression when comparing previous visual field results

Question 8

Fill in the blank: A cataract most likely causes generalized depression in the _______.

Answer 8

total deviation plot