The aqueous humour is the clear, watery fluid that fills the complex space in the front of the eye which is bounded at the front by the cornea and at the rear by the front surface or face of the vitreous humour. In health the aqueous humour does not mix with the firm, gel-like vitreous humour. The face of the vitreous humour spans the eye transversely behind the lens, and the aqueous-filled space in front of this is divided by the iris plane into the anterior chamber and the posterior chamber (which, despite its name, is still an anterior structure). The aqueous humour allows nutrients to circulate to the corneal endothelium and its pressure maintains the convex shape of the cornea. This article refers to the sight organ. ... Vitreous humour is the clear gel that fills the eyeball, lying between the lens and the retina in the eye. ... The lens or crystalline lens is a component of the eye. ... Corneal endothelium is the inner most layer of the cornea, the corneal endothelium is actually a monolayer of squamate epithelial cells lining the anterior chamber of the eye. ...

The aqueous humour is secreted into the posterior chamber by the ciliary body and flows through the narrow cleft between the front of the lens and the back of the iris, to escape through the pupil into the anterior chamber, and then to drain out of the eye via the trabecular meshwork into the aqueous veins and eventually into the veins of the orbit. There are two sets of ciliary muscles in the eye. ... This is an area of tissue located around the base of the cornea, near the ciliary body, and is responsible for draining the aqueous humour from the eye via the anterior chamber (the chamber on the front of the eye covered by the cornea). ...

Glaucoma is a condition characterised by increased intraocular pressure (pressure within the eye), usually caused by increased resistance to outflow of aqueous humour through an abnormal trabecular meshwork, or to obliteration of the meshwork caused by injury or disease of the iris. Uncontrolled glaucoma will lead to visual field loss and ultimately blindness. Human eye cross-sectional view. ... Blindness can be defined physiologically as the condition of lacking sight. ...

(created with Sodipodi) Schematic diagram of the human eye Aqueous humour Anterior chamber Choroid Cornea Ciliary muscle Iris Lens Optic disc Fovea Optic nerve Posterior chamber Pupil Retina Sclera Suspensory ligament Vitreous humor Zonular fibers File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev...