. The fundus oculi of birds, especially as viewed by the ophthalmoscope [microform] : a study in comparative anatomy and physiology. Ophthalmoscopy; Eye; Ophtalmoscopie; Oiseaux; Oeil; Birds. AXATOMV OF TFIE FUXDIS ORGANS I\ BIRDS inconiplftc (lisvclion of llic purls hikI may hv iiiii(!ifi<'<| lattT. ]t\ lliis ju(l«niriit, if we rcjiil liini iiri)jlil. Tn-ncliiT Collins, to somr cxlcnt, concurs. In liis Krasniiis Wilson Lectures on the \nal- an<l I'atliolojry of the Kvc lie remarks "in other animals than Mammals and in tlie human fetal eye there are sources of nutrie
. The fundus oculi of birds, especially as viewed by the ophthalmoscope [microform] : a study in comparative anatomy and physiology. Ophthalmoscopy; Eye; Ophtalmoscopie; Oiseaux; Oeil; Birds. AXATOMV OF TFIE FUXDIS ORGANS I\ BIRDS inconiplftc (lisvclion of llic purls hikI may hv iiiii(!ifi<'<| lattT. ]t\ lliis ju(l«niriit, if we rcjiil liini iiri)jlil. Tn-ncliiT Collins, to somr cxlcnt, concurs. In liis Krasniiis Wilson Lectures on the \nal- an<l I'atliolojry of the Kvc lie remarks "in other animals than Mammals and in tlie human fetal eye there are sources of nutrient supply to the intraocular structures in place of or in acMition to the ciliary ;' He adds that the pigmented, plicated strnc- liir<' of the bird's jM-cten '•closely resemlih-s the ehoroiilal coat . , having, how.'vcr, a rather finer capillary plexus. Minis, there- fore, not only possess well-formed ciliary pro- cesses hut also ;i special vascular arran},'emcnt ill the vitreous ; AccordiiiK to O. Zietzschmann. also, the pec- ten is covered hy a delicate meml)rane which is continuous with the inner limilinfj memlirane of the The Moodvcssels. accordinj- to him. Iielon;; to the ciliary sys- teui and are hrauches of those supi)lied to the optic nerv. Leher l)elic\es the .o- tery to lie (he lialoid artery. Finally, it may ix- added that there arc n.) '.ioodvessels in the Hinls' retina and the vessels of the |>eclen do not. conse(|uenliy. arise from a central artery of the oj)tic nerve as in Mammals since tliat, too, is wauling;. This arratifiement. inasnnieh as the (ipa(|ue vessels tlo not. as in most Mammals and other Vcrt(l)rata', interce{)t the rays of lifjhf impinginf; on tlie per- cipient elements of the retina, makes for a mon- distinct and measurahly clearer-cut iniaj,'e of the ohject visualized hy the avian brain. Compamlirc ophthahnoscopii of reptUiaii fundi. With the aid of Mr. 's brush and by courtesy of Dr. L
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbirds, booksubjecteye
