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An attempt towards a new approach to localized ERG

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Abstract

A new technique for localized ERG is proposed, based on Ulbricht's principle of a uniformly illuminated sphere. According to this principle the illumination of a sphere by stray-light is equal in all parts, regardless as to where the light is located within the sphere.

Two perfectly alternating stimuli produced by a square wave light stimulate two points of the retina; according to be Ulbricht's effect the amount of straylight is considered constant under these conditions. Thus, two electric responses are obtained, which, we believe, originate only from the two stimulated retinal points.

A long series of responses is averaged by a computer.

The possible advantages and disadvantages of this method over previously described methods eliciting focal ERG are discussed.

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Authors and Affiliations

  1. Trieste, Italy

    B. Bagolini, A. Daniele, M. Frank & G. Ravalico

Authors
  1. B. Bagolini
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  2. A. Daniele
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  3. M. Frank
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  4. G. Ravalico
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Additional information

This study was supported in part by the C.N.R. grant No. 115.3379.70.912.04.

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Bagolini, B., Daniele, A., Frank, M. et al. An attempt towards a new approach to localized ERG. Doc Ophthalmol 34, 57–65 (1973). https://doi.org/10.1007/BF00151796

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  • DOI: https://doi.org/10.1007/BF00151796

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