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Rapid confrontation screening for peripheral visual field defects and extinction.

Andrew J Anderson¹, Neil H Shuey, Michael Wall

¹Department of Optometry and Vision Sciences, The University of Melbourne, Australia. aaj@unimelb.edu.au

Clinical & Experimental Optometry

|January 8, 2009

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This study introduces an efficient finger-counting confrontation test for screening visual field defects and extinction phenomena during routine eye exams. It requires minimal patient responses, aiding in early detection of potential neurological or visual issues.

Area of Science:

Ophthalmology
Neurology

Background:

Visual field defects can be subtle and missed in routine eye exams.
Early detection of visual field loss is crucial for timely intervention.

Purpose of the Study:

To present an efficient finger-counting confrontation screening procedure.
To assess its utility in detecting visual field defects and extinction phenomena.

Main Methods:

A novel finger-counting confrontation test was developed.
The test screens all visual field quadrants per eye with minimal patient responses.
It also screens for the extinction phenomenon.

Main Results:

The proposed method is efficient, requiring only four patient responses per eye.

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It simultaneously screens for visual field defects and extinction phenomenon.

Conclusions:

The finger-counting confrontation procedure is recommended as a standard screening tool.
Abnormal results warrant further detailed visual field assessment and neurological examination.