The development of the irido-corneal angle in the chick embryo. 1980

G Renard, and M Hirsch, and M Savoldelli, and Y Pouliquen

The iridocorneal angle of the chick embryo was examined by scanning electron microscopy from the 7th day to the 19th day of development. The mesodermal tissue situated between the corneal endothelium and the iris differentiated into trabecular cells. These cells formed a strip on the 9th day and enlarged on the 13th day to form long cellular fibres. The trabecular meshwork was recognizable on the 15th day and reached full development only on the 19th day. The development of the trabecular meshwork was probably much earlier than is usually described. It began with differentiation of the corneal endothelial cells and these cells acquired a multipolar cell body with long cellular processes. The last stage is probably regulated to avoid an abnormal development of the angle structure. These results can be correlated with those obtained in the morphological examination of the structure of the angle in congenital glaucoma and the "cleavage syndrome" of the anterior chamber.

UI MeSH Term Description Entries
D007498 Iris The most anterior portion of the uveal layer, separating the anterior chamber from the posterior. It consists of two layers - the stroma and the pigmented epithelium. Color of the iris depends on the amount of melanin in the stroma on reflection from the pigmented epithelium.
D002642 Chick Embryo The developmental entity of a fertilized chicken egg (ZYGOTE). The developmental process begins about 24 h before the egg is laid at the BLASTODISC, a small whitish spot on the surface of the EGG YOLK. After 21 days of incubation, the embryo is fully developed before hatching. Embryo, Chick,Chick Embryos,Embryos, Chick
D003315 Cornea The transparent anterior portion of the fibrous coat of the eye consisting of five layers: stratified squamous CORNEAL EPITHELIUM; BOWMAN MEMBRANE; CORNEAL STROMA; DESCEMET MEMBRANE; and mesenchymal CORNEAL ENDOTHELIUM. It serves as the first refracting medium of the eye. It is structurally continuous with the SCLERA, avascular, receiving its nourishment by permeation through spaces between the lamellae, and is innervated by the ophthalmic division of the TRIGEMINAL NERVE via the ciliary nerves and those of the surrounding conjunctiva which together form plexuses. (Cline et al., Dictionary of Visual Science, 4th ed) Corneas
D004727 Endothelium A layer of epithelium that lines the heart, blood vessels (ENDOTHELIUM, VASCULAR), lymph vessels (ENDOTHELIUM, LYMPHATIC), and the serous cavities of the body. Endotheliums
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

Related Publications

G Renard, and M Hirsch, and M Savoldelli, and Y Pouliquen
January 1950, Annali di ottalmologia e clinica oculistica,
G Renard, and M Hirsch, and M Savoldelli, and Y Pouliquen
January 1990, Journal francais d'ophtalmologie,
G Renard, and M Hirsch, and M Savoldelli, and Y Pouliquen
January 1956, Bulletin des societes d'ophtalmologie de France,
G Renard, and M Hirsch, and M Savoldelli, and Y Pouliquen
September 1949, Annali di ottalmologia e clinica oculistica,
G Renard, and M Hirsch, and M Savoldelli, and Y Pouliquen
April 1976, Bulletin des societes d'ophtalmologie de France,
G Renard, and M Hirsch, and M Savoldelli, and Y Pouliquen
January 2005, Bulletin de la Societe belge d'ophtalmologie,
G Renard, and M Hirsch, and M Savoldelli, and Y Pouliquen
February 1976, Klinika oczna,
G Renard, and M Hirsch, and M Savoldelli, and Y Pouliquen
July 1967, Annali di ottalmologia e clinica oculistica,
G Renard, and M Hirsch, and M Savoldelli, and Y Pouliquen
January 1978, Transactions of the ophthalmological societies of the United Kingdom,
G Renard, and M Hirsch, and M Savoldelli, and Y Pouliquen
January 1967, Experimental eye research,
Copied contents to your clipboard!