Progressive retinal degeneration (photoreceptor dysplasia)

Source dog, 3 month (97 day) male miniature schnauzer, OD
Fixative glutaraldehyde, osmium
Stain azure II-methylene blue
Notes this is from the area centralis; notice the phagocyte (macrophage) amongst the photoreceptor inner and outer segments
See also
Legend integral to image
Illustration click on image to see larger picture