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(Investigative Ophthalmology and Visual Science. 1972;11:783-788.)
© 1972 by The Association for Research in Vision and Ophthalmology, Inc.

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The Vector Voltmeter as a Tool to Measure Electroretinogram Spectral Sensitivity and Dark Adaptation

PIETER PADMOS 1 and DIRK V. NORREN 1

1 Institute for Perception, TNO, Kampweg 5, Soesterberg, The Netherlands

The vector voltmeter gives on line both phase and amplitude of the ERG (electroretinogram) response to a flickering stimulus. This makes the apparatus useful in determining spectral sensitivity functions and dark adaptation curves of man and animals, in particular since it enables automatic measurement of these functions. The limitations and applications are briefly discussed.

Key Words: electroretinography • synchronous rectification • spectral sensitivity • dark adaptation • adaptometry • cone function • rod function • phase • vector voltmeter

Submitted on February 23, 1972
Accepted on May 31, 1972




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