Question

Where is aqueous humour produced, what is its circulation path, and where does it drain from the eyeball.

Answer 1

Aqueous humour is a thin, and very transparent fluid. It is similar to the plasma. It is made up of 99.9% of water. It occupies the space between the crystalline lens and the cornea of the eye.

Complete answer:
The aqueous humour is a transparent watery fluid comparable to plasma, but contains low protein concentrations. It is secreted from the ciliary body, a configuration supporting the lens. It fills equally the anterior and the posterior chambers of the eye.

Maintains the intraocular pressure and inflates the ball of the eye. It is this hydrostatic pressure which keeps the eyeball in an approximately spherical shape and keeps the walls of the eyeball stiff.
Provides nutrition for the avascular ocular tissues posterior cornea, trabecular meshwork, lens, and anterior vitreous.
Serve to transport ascorbate .
Occurrence of immunoglobulins indicates a role in immune response to protect against pathogens.
Provides inflation for development of the cornea and thus increased protection against dust, wind, pollen grains and some pathogens.
For refractive index.
Prevent eye dryness.

Aqueous humour is concealed into the posterior chamber by the ciliary body, particularly the non-pigmented epithelium of the ciliary body that is pars plicata. 5 alpha-hydrocortisone, which is an enzyme repressed by 5-alpha reductase inhibitors, may be involved in making of aqueous humour.

Aqueous humour is constantly produced by the ciliary processes and this rate of production must be balanced by the same rate of aqueous humour drainage. Small variations in the production or steady flow of aqueous humour will have a large influence on the intraocular pressure.

Aqueous humour flows from the ciliary body to the anterior chamber through a spongy tissue at the front side of the eye which is called the trabecular meshwork and into a drainage canal.

Note: The aqueous humour bathes and nourishes the lens. It maintains the pressure within the eye .It carries nutrients to the structures in the eye. It serves a lot of functions in the maintenance of eye and other functions like transportation, maintaining the pressure, etc.