RT Journal Article SR Electronic T1 Visual diagnosis in emergency medicine: retrobulbar haemorrhage JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 853 OP 853 DO 10.1136/emermed-2012-201975 VO 30 IS 10 A1 Stephanie Haddad A1 Barry Hahn YR 2013 UL http://emj.bmj.com/content/30/10/853.abstract AB