The aqueous humor is secreted from:

 # The aqueous humor is secreted from:

A. Scleral spur

B. Sinus venosus sclerae

C. Ciliary processes

D. Suprachoroid lamina

The correct answer is C. Ciliary processes.

Aqueous humor is a clear fluid which fills the space between the cornea in front and the lens behind in the anterior segment. This space is divided by the iris into anterior and posterior chambers which communicates freely with each other via pupil. The aqueous humor is secreted into the posterior chamber from the capillaries in the ciliary processes. It passes into the anterior chamber through the pupil. From the anterior chamber it is drained into the anterior ciliary veins through the iridocorneal angle or angle of anterior chamber located between the fibres of the ligamentum pectinatum and the canal of Schlemm. Interference with the drainage of the aqueous humor into the canal of Schlemm results in an increase of intraocular pressure (glaucoma). This produces cupping of the optic disc and pressure atrophy o the retina causing blindness. 

The vitreous humor is clear gel that fills the space between the lens and the retina of the eyeball of humans. It is often referred to as the vitreous body or simply 'the vitreous'. It is produced by certain retinal cells. 

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