Deutsch English Francais

Visual Field - TAP 2.3.1

Visual field defects represent a serious handicap for the affected patients. Pronounced visual field defects render the exploration of the environment difficult , with corresponding consequences for daily work procedures. Furthermore, reading ability may be considerably limited by a hemianopsia or a larger defect of the horizontal visual field, especially to the right side.

Information about visual field deficits is also important for the feasibility of administrating different tests of this battery, for the planning of rehabilitative measures, and especially for compensation training of the visual field defect.

To record vision in circumscribed areas of the visual field, a flicker stimulus is presented at different points of the screen and at varying intervals. A simultaneous central task should hereby insure that the subject fixates on the middle of the screen throughout the entire test run. Whenever the peripheral stimulus appears the patient should press the reaction key as quickly as possible.

Two variants of the test, referred to as the Visual Field test and the Neglect test are available. When administering the Visual Field test, a peripheral flicker stimulus appears on an otherwise empty background. In the condition Neglect test, the screen is filled with a mask of numbers in order to provoke extinction.

Screenshot of the subtest "Visual field" of TAP 2.3

The instruction screen of the subtest "Visual field, central task" of TAP 2.3 (to get a larger view (1024*768) - opening in a new browser window - please click on the image)

Execution time: Short version: approx. 5 minutes
Long version: approx. 10 minutes