vision/eye
• in 75% of mutant eyes retinal dysplasia is seen with finger like projections of photoreceptor cells protruding into the outer nuclear layer and/or invagination of the retina without disrupting the cell layers
• dysplasia can be detected on P1
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• photoreceptor outer segments appear elongated and disorganized
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• axons are loosely bundled and occasionally have aberrant trajectories however all exit the optic disc normally
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nervous system
• motor neurons are loosely bundled with some axons exiting the bundles at a right angle to the adjacent nerve and ending blindly or forming bridges to neighboring bundles
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• photoreceptor outer segments appear elongated and disorganized
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