Figure 236

Schematic diagram of the structure of the eye. This drawing shows a horizontal section of the eyeball with color-coded layers of its wall. Upper inset. Enlargement of the anterior and posterior chambers shown in more detail. Note the direction of the flow of aqueous humor (arrows), which is drained by the scleral venous sinus (canal of Schlemm) at the iridocorneal angle. Lower insets. Typical organization of the cells and nerve fibers of the fovea centralis (left) and the retina (right).

ora serrata posterior chamber zonula ciliary ciliary"* fibers process muscle optic nerve epithelium

/ .Bowman's membrane . stroma cornea anterior chamber.

corneoscleral limbus cornea

Descemet's membrane endothelium _

sphincter m. ~~ pigment layer dilator m__

conjunctiva canal of Schlemm iris photosensitive retina sclera optic papilla fovea \

choroid retinal pigment epithelium

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