Ocular Diseases : Optic Nerve Diseases Flashcards
What is the lack of blood flow to optic nerve called?
Ischemic Optic Neuropathy
What are the two types of Ischemic Optic Neuropathy?
Arteritic Anterior Ischemic Optic Neuropathy (AAION)
Non Arteritic Ischemic Optic Neuropathy (NAION)
What is associated with temporal artiritis?
AAION
What is reduced blood flow to the nerve?
NAION
What are the characteristics of AAION and NAION?
Sudden vision loss
Reduced VS
VF defects
Which one is associated with diabetes, hypertension, hyperlipidemia and renal disease?
NAION
What is the treatment for NAION?
Treat underlying disease
Which one is associated with giant cell arteritis?
AAION
What is the treatment for AAION?
High dose steroids
What is acute, painless vision loss in one or both eyes?
Posterior Ischemic Optic Neuropathy
What are the 3 types of PION?
Arteritic PION from GCA
Non Arteritic PION
Perioperative PION
What occurs in PION?
Reduced blood flow and oxygenation to INTRAORBITAL optic nerve
Where is the reduced blood flow and oxygenation?
Intraorbital Nerve
What disease : Optic disc swelling Generally bilateral Headaches Enlarged blind spot
Papilledema
What is papilledema caused by?
ELEVATED INTRACRANIAL PRESSURE