BASIC SCIENCES: Ophthalmic artery -- Central retinal artery -- Cilioretinal artery -- Posterior ciliary arteries -- Orbital veins -- Retinal capillaries -- Optic nerve head blood supply -- Anterior segment blood supply -- Blood-retinal barrier -- Blood flow -- Retinal tolerance time to acute ischemia. CLINICAL SCIENCES: Clinical evaluation of patients with ocular vascular occlusive disorders -- Central retinal artery occlusion -- Branch retinal artery occlusion -- Cilioretinal artery occlusion -- Hemicentral retinal artery occlusion -- Cotton-wool spots -- Posterior ciliary artery occlusion -- Anterior segment ischemia -- Optic nerve head ischemia -- Ophthalmic manifestations of carotid artery disease -- Central retinal vein occlusion -- Hemi-central retinal vein occlusion -- Branch retinal vein occlusion -- Vortex vein occlusion -- Hypertensive fundus changes -- Amaurosis fugax in ocular vascular occlusive disorders.  .