Orbital cellulitis

Orbital cellulitis is inflammation of eye tissues behind the orbital septum. It most commonly refers to an acute spread of infection into the eye socket from either the adjacent sinuses or through the blood. When it affects the rear of the eye, it is known as retro-orbital cellulitis. Common signs and symptoms of orbital cellulitis include pain with eye movement, sudden vision loss, bulging of the infected eye, and limited eye movement.