Intraocular fluid is produced in outcrops of the ciliary body. It circulates in the anterior segment of the eye. It fills the anterior and posterior chamber of the eye and is drained into the scleral blood vessels.
The intraocular fluid is hypertonic with high concentrations of ascorbic acid. In cases of eye inflammation the physiological composition of the intraocular fluid gets disrupted (there is also a disruption of production and outflow).
The function of intraocular fluid is to maintain intraocular pressure, the increase of which is the most significant symptom of glaucoma.