Inner retinal function. A, Extracted oscillatory potential traces of a PVCre mouse (left) and PVCre::scFvOTX2tg/o mouse (right). B, The amplitude of an early OP (OP2) is not altered in the PVCre::scFvOTX2tg/o mice, while the amplitude of a late OP (OP4) is significantly reduced by ∼50%. C, Representative traces of 20 Hz flickers of the left eye of mice of the two genotypes. D, The amplitude of the flicker response to 10 Hz stimulation after light adaptation is slightly increased, and at 20 Hz the response is significantly doubled in amplitude. Bottom, There was no difference in the implicit time of the flicker responses between mice expressing OTX2scFv and their PVCre littermates. ***p < 0.005, Mann–Whitney U test, two tailed. N = 7 for PVCre and N = 9 for PVCre::scFvOTX2tg/o mice. Values mean ± sem.