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The use of crossed polarized filters in the measurement of the relative afferent pupillary defect.

Authors :
Rosenberg ML
Oliva A
Source :
American journal of ophthalmology [Am J Ophthalmol] 1990 Jul 15; Vol. 110 (1), pp. 62-5.
Publication Year :
1990

Abstract

We used crossed polarized neutral density filters to quantitate relative afferent pupillary defects. To prove reproducibility, the relative afferent pupillary defects of 20 patients were measured with this technique by two independent observers. There was no statistically significant difference between the two measurements. Relative afferent pupillary defects as low as 0.03 log unit were easily measured. These filters offer a convenient and reproducible technique that is more sensitive than the use of neutral density filters.

Details

Language :
English
ISSN :
0002-9394
Volume :
110
Issue :
1
Database :
MEDLINE
Journal :
American journal of ophthalmology
Publication Type :
Academic Journal
Accession number :
2195895
Full Text :
https://doi.org/10.1016/s0002-9394(14)76939-9