CRP and retinal artery occlusion: Other studies revealed a possible association for CRP and ocular ischemic syndrome, and CRP titers can be slightly elevated in branch retinal vein occlusion with no significant association (approx. 3.5 mg/L), but other data indicate that hsCRP > 3 mg/L can have a crucial role in the development of eye vascular disease; yet, another study concluded that despite the relationship between CRP and atherosclerosis, there was no association between elevated CRP and retinal artery occlusion [520,521,522,523].