Stockman, A., Smithson, H., Webster, A., Holder, G., Rana, N., Ripamonti, C., & Sharpe, L. (2008). The loss of the PDE6 deactivating enzyme, RGS9, results in precocious light adaptation at low light levels. Journal of Vision, 8(1), https://doi.org/10.1167/8.1.10