Traumatic eye with late presentation of unilateral proptosis and scleral hyperamia is seen in
Proptosis after trauma, late presentation ,scleral hyperamia, most probable diagnosis is Retrobulbar hematoma . Refer khurana 6/e 404
Retrobulbar hematoma
Retrobulbar cellulitis
Carotico cavernous fistula
Pneumo orbit
Diseases of orbit, Lids and lacrimal apparatus