Thanks for response:
Sorry sir, you con't got my point of view, i now about venoule and arteriol but according to my question that i have seen in different articles and books that CRVO caused by HYPERTENSION, DIABETIES AND OR VASCULITIS. Is these are risk factors for CRVO or cause? but as for CRAO we say that it is caused by EMBOLI, not by LONG BONE FRACTURE because it is risk factor for CRAO which is written in different articles and books, than as for as conserend to CRVO why don't we say that the cause of CRVO is THROMBOSIS, not the HYPERTENSION, DM and VACULITIS these are risk factors for CRVO so sir according to my openion the cause of CRVO is only thrombosis. is that clear. I have for your openion thanks.
CRAO is different from CRVO. One is arteriole (CRAO) the other is venous. CRAO can be caused by an emboli.
Dr. O.