Zur Morphologie des Auges von Choeropsis liberiensis und Hippopotamus amphibius (Mammalia, Artiodactyla, Hippopotamidae)*

In the citing paper

“The retina itself has two histologically distinct types of pigmented epithelial cells and three types of photoreceptor cells (Hegner 1967).”

In the citing paper

“The tapetum lucidum is light blue, reflective, and extends across the majority of the fundus; the ventral aspect is grossly obscured by the pigmented epithelial cell layer of the retina and thus the functional tapetum primarily occupies the dorsal aspect of the fundus (Hegner 1967).”

In the citing paper

“Asymmetry of the ciliary body also gives C. liberiensis a more extensive rear field of vision (Hegner 1967).”

In the citing paper

“The pupil is oval, 7 mm wide and 5 mm high, with a symmetrical iris width of 2 mm; the lens is 10 mm in diameter and 7 mm thick; scleral thickness varies between 1.2 and 1.5 mm (Hegner 1967).”

In the citing paper

“The globe (eyeball) itself is rounded and slightly taller than it is wide; measurements from a subadult female (117 kg) were 24.3 mm horizontal diameter, 18.6 mm anterior to posterior diameter, and 22.5 mm vertical diameter (Hegner 1967).”