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Updated: Aug 12, 2026

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Transretinal ERG Recordings from Mouse Retina: Rod and Cone Photoresponses
Published on: March 14, 2012
Rod and cone contribution to the EOG ratio
American Journal of Optometry and Physiological Optics
|February 1, 1978
Abstract:
The EOG ratio is an established clinical test of retinal function. Since its development by Arden and coworkers in 1962, it has been thought of as simply a rod-medicated response. Using scotopically matched red and blue lights, we found a 24% larger response to the red light than to the blue light, establishing that a cone contribution exists in the EOG ratio of normal subjects.
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