<unk>  is determined by the production and drainage of aqueous humour by the ciliary body and its drainage via the trabecular meshwork and uveoscleral outflow. The reason for this is because the vitreous humour in the posterior segment has a relatively fixed volume and thus does not affect<unk>  regulation. An important quantitative relationship (Goldmann's equation) is as follows: : Where: * is the<unk>  in millimeters of mercury (mmHg) * the rate of aqueous humour formation in microliters per minute (μL/min) * the resorption of aqueous humour through the uveoscleral route (μL/min) * is the facility of outflow in microliters per minute per millimeter of mercury (μL/min/mmHg) * the episcleral venous<unk>  in millimeters of mercury (mmHg). The above factors are those that drive<unk> .
Intraocular pressure
Ocular tilt reaction
Intracranial pressure
Corneal reflex
Ocular tonometry
Cerebral perfusion pressure
Visual field
Visual acuity