Diagnostic accuracy of confrontation visual field tests

Diagnostic accuracy of confrontation visual field tests
among 332 eyes with a prevalence of defects of 57%
Selected findings Sensitivity (%) Specificity (%) Kappa
Red comparison
77
27
0.74
Kinetic 5 mm red target
74
93
0.67
Finger comparison
71
57
0.69
Static finger wiggle
44
97
0.63
Finger counting
25
100
0.79

How to do the tests

  • Red comparison: “Two identical red atropine bottle tops, approximately 20 mm in diameter, were presented in a fashion analogous to the finger comparison test described above and the patient was asked if the bottle tops appeared equally red. Any quadrant in which the bottle top appeared less red was considered abnormal.”
  • Kinetic red target: “A 5-mm red-topped pin was moved inward from beyond the boundary of each quadrant along a line bisecting the horizontal and vertical meridians. The patient was asked to report when the pin was first perceived to be red.”
  • Finger comparison: “The examiner’s index fingers were presented simultaneously on either side of the vertical meridian in the superior and then inferior quadrants approximately 20° eccentric to fixation and the patient was asked to report if the fingers appeared equally clear. Any quadrant in which the finger appeared less clear was recorded as abnormal.”
  • Static finger wiggle: “Two index fingers were presented simultaneously on either side of the vertical meridian approximately 20° eccentric to fixation and equidistant from the quadrant borders in the superior and then inferior quadrants. The patient was asked to report which finger wiggled (<5° oscillation).”
  • Finger counting: “The patient was asked to count 1 or 2 static fingers presented sequentially in each of the 4 quadrants approximately 20° eccentric to fixation and equidistant from the quadrant borders.”

Reference

Kerr NM, Chew SS, Eady EK, Gamble GD, & Danesh-Meyer HV (2010). Diagnostic accuracy of confrontation visual field tests. Neurology, 74 (15), 1184-90 PMID: 20385890

Advertisements

Tags:

2 Responses to “Diagnostic accuracy of confrontation visual field tests”

  1. Schwa Says:

    Hmm, you don’t explain how to do the Red Comparison test.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


%d bloggers like this: