2. Thrombosis
Emboli
Giant cell arthritis
Angiospasm
Increase iop
Using anticogaulant drug
3. Non ishchemic : in early stage mild venous congestion
tortusity a few superficial flame shape hamorrage
In late stage {after 6 to 9month} hamerroge partielly absorbe
CMO {cystoid macular odema } are present.
TREATMENT: oral steroid 8 – 12 weeks.
4. Ischemic : ( hamorragic retinopathy )
Sudden vision loss
Congestion and tortusity of veins
Papilodema are seen
In late stage ( NVD ) are present
RAPD defect
TREATMENT : Pan retinal photocoagulation