It is refered as inflammation of soft tissue of orbit or eyeball behind the orbital septum.
Aetiology: 1.Exogenous- Any injury or retraction of foriegn body.
2.Extention of infection from surrounding organ- paranasal sinusitis, caries teeth, bony tumors,etc
3.Endogenous- retroretinal infection or tumors, optic neuralgia,etc
Symptoms: Painful swelling of eye lid, visual disturbence, nausea, headache,etc
Signs: Restricted ocular movements, pianfulness, restlessness,etc
Investigations: Bacterial culture, tomography, computerised sonography, Haemoglobin tests.
Management: Immediate antibiotic therapy, antiinflammatry drugs, analgesics, even surgery can cure this condition.