Pseudoproptosis caused by-
*Pseudoproptosis is a condition in which the eyeball appears to be proptosed but actually there is no forward displacement. The causes are Buphthalmos (congenital glaucoma), high myopia, upper lid retraction, Paralysis of the extrinsic muscles, stimulation of muller muscle by cocain, shallow orbit as in craniofacial dysostosis. Ref: Parson's 22nd/e p.304
Buphthalmos
Meningioma of optic nerve
Orbital cellulitis
Dermoid cyst
Diseases of orbit, Lids and lacrimal apparatus