. The fundus oculi of birds, especially as viewed by the ophthalmoscope; a study in the comparative anatomy and physiology . Pelecaniformes Plate XXIX Sulci bassana. Pelecaniformes Plate XXX Pelecanus conspicillatus CARINATiE Serpentariiformes Secretary Bird. Gypogeranus vel Serpentarius serpentarius. Plate XXXI. The general color of the eyeground is dull gray, pitted with mixedlight and dark brown pigment grains or dots, the darker being aboutdouble the size of the lighter granules. Mixed with these dots is adense mass of minute, bright points that cover the whole fundus, butthey can be obser
. The fundus oculi of birds, especially as viewed by the ophthalmoscope; a study in the comparative anatomy and physiology . Pelecaniformes Plate XXIX Sulci bassana. Pelecaniformes Plate XXX Pelecanus conspicillatus CARINATiE Serpentariiformes Secretary Bird. Gypogeranus vel Serpentarius serpentarius. Plate XXXI. The general color of the eyeground is dull gray, pitted with mixedlight and dark brown pigment grains or dots, the darker being aboutdouble the size of the lighter granules. Mixed with these dots is adense mass of minute, bright points that cover the whole fundus, butthey can be observed only when the reflected light of the mirror isthrown on them. These deposits give the background the appear-ance of a rough surface. A thin layer of translucent nerve fibressurrounds the papilla for a short distance, particularly along the longaxis of the nerve-head. A little above the upper end of the optic disc and towards thenasal side is the fovea centralis, a round white dot enclosed by anarrow ring of bright green. On the temporal side of the disc, andabove the end of it. is also a long, narrow, sensitive area. Thispart is enclosed by a shimmering r
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjecteye, bookyear1917
