Sickle cell disease (SCD) is a group of RBC disorders people with SCD have got abnormal Hb called Hbs or sickle hb in their RBC the disorder is genetic and occurs in families. We have SC trait it is more common in blacks and certain regions are more affected like some parts of mediteranian and some parts of eastern saudi arabia this disorder is liable to go in crisis during that phase pts have severe bony pais and abdominal pain mimiking osteomyelitis and acute abdomen they have to be put on i v fluids  2 analgesics and oxygen.

The ocular manifestations are ant segment manifestations  Coma shaped conjunctival lesions due to segmental dilatation of ant segment and episcleral vessels  post segment  can be classified with following entity:  Peripheral arteroalar venular oclusion   PAV anastomosis  P neo vascularsation  Vitrousheamarghe  Retinal detachment  the broad entity of s c…