The Scotopic ERG Response A dim flash of light below the sensitivity threshold for cone photoreceptors stimulates only the rods in a dark adapted eye.

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Presentation transcript:

The Scotopic ERG Response A dim flash of light below the sensitivity threshold for cone photoreceptors stimulates only the rods in a dark adapted eye. An electrode placed on the cornea records the changing electrical potentials of the cells in the retina.

The Scotopic ERG Response A flash of light stimulates both rod and cone photoreceptorsin a dark adapted eye. An electrode placed on the cornea records the changing electrical potentials of the cells in the retina.

Multifocal electroretinogram (mfERG): records focal responses from several locations in retina simultaneously primarily tests middle and outer retinal layers

Advances in imaging techniques Gerth CR, Zawadski RJ, Warner JS and Heon E (2008).

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