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. 2013 Nov 24;19:2393–2406.

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Copyright © 2013 Molecular Vision.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited, used for non-commercial purposes, and is not altered or transformed.

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Full-field electroretinogram. The electroretinograms (ERGs; patient II-1) at the age of 9 years, showing no standard combined, photopic, or 30-Hz flicker responses in either eye. The ERGs (patient II-2) at the age of 7 years, showing no rod, standard combined, photopic, or 30-Hz flicker responses in either eye.