Table 1.

Classification of orbital disease according to Chandler et al²

Class	Category	Description
1	Pre-septal disease	Eyelid swelling without proptosis, ophthalmoplegia or loss of vision
2	Orbital cellulitis	Inflammation of the orbital fat, proptosis, restricted eye movements, colour desaturation
3	Subperiosteal abscess	Pus collection elevating the periosteum off the bony orbit
4	Orbital abscess	Pus collection within the orbit
5	Cavernous sinus thrombosis