Retinal Artery Occlusion Flashcards
What is the first branch of the ophthalmic artery
Central retinal artery
What does the central retinal artery branch into
Superior and inferior vessels
What is another branch of the ophthalmic artery
Posterior ciliary arteries
They give rise to cilio-retinal artery
What do the ciliary arteries supply
Outer retina
What are the causes of CRAO
Embolism
Thrombus
Inflammatory vessel wall damage
Traumatic vessel wall damage
Hypotension
Symptoms of crao
Sudden profound loss of vision
Painless
Rapd
Reduced visual acuity
What is seen in fundoscopy of CRAO
Cherry red spot
Small haemorrhages
Emboli
Symptom of BRAO
Sudden painless alititudinal or sectoral loss of vision - loss of vision in upper or lower horizontal half or visual field
Fundoscopy of BRAO
Attenuation of arteries and veins
White oedematous retina
Emboli
What supply a second blood supply to the retina
Cilioretinal arteries
What is cilioretinal artery occlusion combined with
Central retinal vein occlusion
What is amaurosis fugax
Transient visual loss in one or both eyes
Symptoms of amaurosis fugax
Dark curtain descending on eye
Usually only affect one eye
Patient can have many attacks
Management of CRAO
Ocular massage
IV acetazolamide
Rebreathing into a paper bag
Nd:YAG laser
Thrombosis is
