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. Author manuscript; available in PMC: 2008 Jun 23.
Published in final edited form as: Eur J Neurosci. 2007 Sep 14;26(7):1940–1949. doi: 10.1111/j.1460-9568.2007.05801.x

Fig. 7.

Fig. 7

Behavioural analysis of RPE65-deficient larvae. (A) Optokinetic gain triggered by moving gratings (velocity 7.5 °/s, contrast 99%) of varying spatial frequency under moderate background intensity (120 cd/m2) showed no significant reduction in visual acuity in RPE65 morphants (n = 8) compared to controls (n = 8). (B) Optokinetic gain measured with moving gratings (velocity 7.5 deg/s, spatial frequency 0.06 cycles/deg) of varying contrast. Contrast sensitivity of the optokinetic response was not significantly reduced in RPE65-deficient larvae when measured with a dark grating stimulus (n = 5, 0.36 cd/m2, closed symbols). Under high intensity conditions (n = 5, 386 cd/m2, open symbols) optokinetic gain was slightly reduced (two-way ANOVA with repeated-measures on factor contrast, P < 0.05).