@article {Alexander69, author = {K. R. Alexander and G. A. Fishman}, title = {Supernormal scotopic ERG in cone dystrophy.}, volume = {68}, number = {2}, pages = {69--78}, year = {1984}, doi = {10.1136/bjo.68.2.69}, publisher = {BMJ Publishing Group Ltd}, abstract = {Three patients with a bull{\textquoteright}s-eye macular lesion and other signs characteristic of cone dystrophy gave an unusual ERG finding. In response to a white flash of moderate intensity the scotopic b-wave amplitude was considerably larger than normal. One patient had elevated rod thresholds and nyctalopia, while the other 2 had normal rod sensitivity associated with the supernormal scotopic b-wave amplitude. In the latter 2 patients the abnormal ERG pattern was unchanged for 4 years and 7 years respectively. This atypical finding, of a supernormal scotopic b-wave amplitude in response to light of moderate intensity, appears to characterise a subgroup of patients with cone dystrophy, probably of autosomal recessive inheritance. The pathogenesis of the abnormal ERG remains uncertain.}, issn = {0007-1161}, URL = {https://bjo.bmj.com/content/68/2/69}, eprint = {https://bjo.bmj.com/content/68/2/69.full.pdf}, journal = {British Journal of Ophthalmology} }