Aqueous humour

The aqueous humor is formed by carbonic anhydrase of ciliary body tissue from blood components. Similar to the blood -brain barrier ultrastructural cell seals for a highly specific chemical composition of the aqueous humor worry (blood - aqueous barrier ).

A human eye produces about 3-9 ml chamber of water per day with a Augapfelvolumen of approximately 6.5 ml

Way of the aqueous humor

The aqueous humor is formed at the ciliary discharged into the posterior chamber and passes through the pupil into the anterior chamber. This creates a cycle: At the front of the iris, the aqueous humor increases due to the higher temperature up to sink then on the cooler back of the cornea. Then it is absorbed in the so-called chamber angle ( Angulus iridocornealis ) via Schlemm's canal and passes through the plexus venosus sclerae, a venous plexus in the sclera, again. In the bloodstream In some species, however, the discharge takes place mainly through the vessels of the ciliary body and the iris ( or uveoscleral outflow uveovortikaler ).

Function

The aqueous humor contains nutrients for lens and corneal endothelium and is used with its content of immune factors and the circulation of potentially harmful agents away from the interior of the eye.

The ratio of production to discharge flow of the aqueous humor determines the intraocular pressure.

Diseases

Chamber water loss after the opening of the eyeball, for example during surgery or accidents can lead to choroidal swelling, especially if the resulting pressure loss is not compensated in a short time. Leaking water chamber can be detected using the Seidel test.

Overproduction or disorders of the outflow of aqueous humor lead to an increase in intraocular pressure and thus increase the risk of glaucoma ( glaucoma).