Posterior sclera, choroidea, retina
Transverse section through the retina of the eye of a pigeon (HE) (2)
The cells of the pigment layer are cylindrical rather than cuboidal and show tufts of (accumulated) pigment granules in their apical part.
The visual cell layer is well-developed (see also next picture).
Above, the nerve fiber layer has enormously thickened towards the optic disc.