Ocular Diseases : 2 Flashcards
What occurs when the amount of oxygen is reduced due to restricted or reduced blood flow?
Ischemia
Does ischemic optic neuropathy result in visual field loss but visual acuity is not affected?
No
What is caused by poor blood flow associated with diseases such as diabetes or hypertension?
Non Arteritic Anterior Ischemic Optic Neuropathy
NAION
What is linked to blood vessel inflammation secondary to giant cell arteritis?
Arteritic Anterior Ischemic Optic Neuropathy
AION
What is swelling of the optic nerve?
Papilledema
What is one of the first signs of Multiple Sclerosis?
Optic Neuritis
What is the autoimmune disease that attacks the myelin sheath?
Multiple Sclerosis
Are swollen optic nerves with blurry margins characteristics of optic neuritis?
Yes
What occurs when the optic nerve is inflamed?
Optic Neuritis
Is the HbA1C blood test useful for measuring day to day blood sugar levels in a diabetic person?
No
What is referred to as adult onset diabetes?
Type 2 Diabetes
Do elevated blood sugar levels associated with diabetes cause damage to blood vessels?
Yes
What occurs due to blockage of a retinal artery by a cholesterol plaque?
Branch Retinal Artery Occlusion
BRAO
What is diabetic retinopathy and hypertensive retinopathy characterized by?
Hemorrhages
Exudate
Cotton wool spots
What are risk factors for developing hypertension?
Smoking
Older age
Lack of physical activity
What disease is due to lack of blood flow to the optic nerve?
Ischemic Optic Neuropathy
What is a swollen optic nerve called due to intracranial pressure?
Papilledema
What is an ophthalmic disease that is associates with the systemic diseases called multiple sclerosis?
Optic Neuritis
What is a systemic disease that is associated with a lack of insulin or resistance to insulin?
Diabetes
What are retinal features associated with diabetic retinopathy?
Hemorrhages
Cotton Wool Spots
Exudate
What is hypertension or high blood pressure associated with?
(Retinal Disease)
Hypertensive Retinopathy
What is due to the restriction of the central vein by an artery that is under high pressure?
Central Retinal Vein Occlusion
What is a term used to describe when one of the retinal arteries constricts a retinal vein when they cross paths?
Arteriovenous Nicking
Arteriovenous crossing changes