. The fundus oculi of birds, especially as viewed by the ophthalmoscope; a study in the comparative anatomy and physiology . Struthioniformes Plate I Struthio camelus. Rheiformes Plate II Rhea americana RATITjE Casuariiformes Westerman Cassowary. Casuarius occipitalis. Plate III. The fawn-colored eyeground is covered with a minute, silver-gray stipple, in the form of fine, short lines with their long axesrunning in a vertical direction. As these dotted lines approach themacular region they become more and more convergent until they forma brilliant cluster at the fovea. There is no visible line
. The fundus oculi of birds, especially as viewed by the ophthalmoscope; a study in the comparative anatomy and physiology . Struthioniformes Plate I Struthio camelus. Rheiformes Plate II Rhea americana RATITjE Casuariiformes Westerman Cassowary. Casuarius occipitalis. Plate III. The fawn-colored eyeground is covered with a minute, silver-gray stipple, in the form of fine, short lines with their long axesrunning in a vertical direction. As these dotted lines approach themacular region they become more and more convergent until they forma brilliant cluster at the fovea. There is no visible line of demarca-tion or reflex ring separating this area from the general fundus are no visible choroidal vessels or opaque nerve fibres. The optic disc is long and boat-shaped, with a reddish, appar-ently concave centre. It is uniformly sprinkled with darker red dots,which, as they approach the margin of the papilla, are more closelypacked, and give the appearance of a shadow cast all about theinner edge of the disc. The margins of the nerve-head are dis-tinctly white, but they have not the fibrous appearance seen inmost avian backgrounds. The chocolate
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjecteye, bookyear1917
