Progressive retinal degeneration (photoreceptor dysplasia)

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