Episceral congestion

Episcleral congestion (engorgement of the blood vessels that run across the white part of the eye) is a feature of glaucoma. In rabbits, the blood engorged blood vessels to form a circle around the cornea. This syndrome is sometimes referred to as 'cilary flush'. The blood vessels become more prominent in eyes with a high intraocular pressure. This eye had an intraocular pressure of 28mm Hg measured by tonometry. Normal intraocular pressure is 15-23mm Hg