Comparison of electro-oculogram recording methods.

Abstract:

:The purpose of this study was to compare the variability of the amplitude ratios and latencies of the electro-oculogram (EOG) light peak (LP) in three different recording conditions: Arden ratio (dark trough (DT): 12 min), modified Arden ratio (DT: 15 min) and light peak/dark baseline ratio (LP/BL: 35 min of dark adaptation). Additionally, EOGs from eyes with dilated and undilated pupils were recorded. The light intensity stimulating the eyes with dilated pupils was attenuated 1 log unit. The EOG amplitude ratios displayed no significant difference between the three conditions tested. The comparison of implicit times (time from onset of light exposure to LP) revealed significantly (p < 0.001) shorter values when the recording of the LP was preceded by a dark adaptation of 35 min. The broadening of the curves in DT/LP recordings might be caused by a superposition of a residual dark oscillation on the LP. The recordings from eyes with dilated pupils--stimulated with 1 log unit lower intensity--revealed lower amplitude ratios than the recordings from eyes with undilated pupils.

journal_name

Ophthalmic Res

journal_title

Ophthalmic research

authors

Lessel MR,Thaler A,Scheiber V,Heilig P

doi

10.1159/000267320

subject

Has Abstract

pub_date

1993-01-01 00:00:00

pages

245-52

issue

4

eissn

0030-3747

issn

1423-0259

journal_volume

25

pub_type

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