胶原板层结构 lamellae of fine collagen network fibl bl robarts
胶原板层结构 11 lamellae of fine collagen f.network fibroblasts
The reasons of cornea transparent No blood vessels pigments Basal of epi is plane Uniform spacing of collagen fibrils and lamellae in stroma G.S. with transparent nature maintains proper water
The reasons of cornea transparent • No blood vessels & pigments • Basal of epi. is plane • Uniform spacing of collagen fibrils and lamellae in stroma • G.S. with transparent nature & maintains proper water 12
Retina Antenor chamber Limbus Schlemm canal wo regions. Lens The nonphotosensitive region Chary muscle Ora serrata Posterior Ciliary body (nonvisual part) chamber and process Located anterior to the ora serrata, Photosensitive retina no photoreceptors. Scera Fovea The photosensitive region Sclera optic par t) Pigment epithelium/ Choro Lines the inner surface of the eye posterior to the ora serrata(except the optic papilla
Retina Two regions: •The nonphotosensitive region (nonvisual part) Located anterior to the ora serrata, no photoreceptors. •The photosensitive region (optic part) Lines the inner surface of the eye posterior to the ora serrata (except the optic papilla) 13
Retina 4 layers of cells 'choroid pigment epithelium Pigment cells outer segments photoreceptor inner segments outer nuclear Optio ptic cells laver (ONL outer plexiform layer(OPL) ell inner nuclear bipolar cell Ganglion cells inner plexiform laver (IPL) ganglion cell layer(CCL) gang lion cell tic fiber la LIGHT (OFL)
Retina 4 layers of cells: ▪ Pigment cells ▪ Optic cells ▪ Bipollar cells ▪ Ganglion cells 14