Due to<unk>  capillary rupture, can be due to acute or chronic processes
Subacute bacterial endocarditis
Hypertensive retinopathy
Diabetic retinopathy
Trauma: nonaccidental trauma (shaken baby syndrome), intracranial<unk> , neonatal birth trauma
Central<unk>  Artery Occlusion (CRAO), Central<unk>  Vein Occlusion (CRVO)
Anemia, leukemia, sickle cell anemia
Anoxia
Acute mountain sickness
Carbon monoxide poisoning
Prolonged intubation during anesthesia
Connective tissue disease, SLE
Scurvy, Wernicke-Korsakoff syndrome
Preeclampsia
Pentoxifylline
Ocular decompression following trabeculectomy
Retinal hemorrhage
Painful
Vitreous hemorrhage
Arteritic anterior ischemic optic neuropathy
Retinal detachment
Optic neuritis
Posterior vitreous detachment
Temporal arteritis†