Abnormal protrusion of the eyeball beyond the orbital margin is called Proptosis.
Forward protrusion of the eyeball beyond the orbital margin.
5 important causes of Proptosis:
For easy memorizing: CHRONiC
- Cavernous sinus thrombosis
- Retro-bulbar hemorrhage
- Orbital cellulitis
Panophthalmitis, Pseudo-tumour, Osteoma, Lymphosarcoma, rhabdomyosarcoma, meningioma, Orbital varices, Aneurysm of the blood vessels, Hydatid cyst, Leukaemic deposit, Cranio-sinostosis, colobomatous cyst, Cavernous sinus thrombosis, Xanthomatosis of orbit, neuroblastoma.]
[N:B: Bilateral Proptosis is called exophthalmos]
[Ref: Basak 4th/358-359]