Ocular Manifestations of Systemic Disease- Exam 3 Flashcards
_____ damage specifically to the retina from prolonged HTN
hypertensive retinopathy
______ Due to inadequate perfusion of posterior ciliary arteries supplying the anterior portion of the optic nerve causing ______
Anterior ischemic optic neuropathy
optic disk swelling
What is the cause of retinal vein and artery occlusion?
increase pressure damaging the ocular blood vessels leading to emboli
What is the clincial pearl associated with retinal vein occlusion?
“blood and thunder fundus” due to widespread retinal hemorrhages and venous dilation and tortuosity
Central retinal artery occlusion you are likely to see ____ and _____ associated with HTN
cherry red spot on fovea and boxcar segmentation
When comparing arteries and vein in the eye, which one is lighter?
arteries are lighter in color than veins. veins are darker
_____ are small, yellow-white, slightly elevated lesions, which look like clouds on retinal surface
Cotton Wool Spots AKA “Soft Exudates”
A small artery is seen crossing a small vein
This causes compression on the small vein
Indentation (nicking) of retinal veins by stiff (arteriosclerotic retinal arteries) is ____. What dz is it associated with?
A-V nicking
HTN
What are copper and silver wiring due to ? commonly seen in what dz? Which one is worse?
Both due to atherosclerotic vessel wall thickening
chronic HTN
Copper: Moderate vascular wall changes
Appear orange or yellow instead of red
Silver: Severe vascular wall hyperplasia and thickening
Appear white
Silver is worse
____ are caused by alters the retina’s microvasculature, causing leakage from arterioles and veins. Appear in the retina’s superficial layers. What dz?
Flame Hemorrhages
HTN
HTN increases your risk of what 4 ocular conditions?
-Overall vision loss
- age-related macular degeneration
- open angle glaucoma
- subconjunctival hemorrhage
Age-related macular degeneration is due to ????
Due to decreased blood flow to the retina leading to neovascularization
How does DM affect the eye?
sugar blocks the tiny blood vessels that go to your retina, causing them to leak fluid or bleed. To make up for these blocked blood vessels, your eyes then grow new blood vessels that don’t work well
blurry vision/loss of sharp vision, vision loss, floaters, decreased color perception
blurry vision/loss of sharp vision, vision loss, floaters, decreased color perception
How does a pt with DM vision changes present?
What are the stages of Diabetic Retinopathy?
Stage 1-4.
1 is mild and 4 is severe
______ is the leading cause of new cases of blindness in people aged 20–74 in the United States
Diabetic retinopathy (DR)
Diabetes doubles the chances of developing ____ and ______
glaucoma and cataracts
Name some fundoscopic findings that are common in pts with DM?
**Flame hemorrhage
Hard exudates
**Cotton wool spots
Neovascularization
Microaneurysms
Macular Edema
Dot Blot Hemorrhages
Neovascularization is commonly seen in _____ and ______
diabetic retinopathy and macular degeneration
What is neovascularization caused by?
Microvascular damage and ischemia cause release of vasoproliferative factors (Vascular Endothelial growth Factor)
This results in new vessel from the adjacent retinal vessels in an attempt to revascularize the diseased tissue
How can you tell the difference between soft and hard exudates?
Soft: exudates are small, light yellowish-white or grayish-white slightly higher lesions which appears as clouds on retina and their edges are blurry and not clearly defined
vs
hard: exudates are small white or yellowish white deposits and their edges are clear and sharp
_____ Occur as microaneurysms rupture in the deeper layers of the retina.
Blood accumulates in the ____
Dot-Blot Hemorrhages
Inner nuclear layer
_____ a blue ring around the rim of the iris, is due to cholesterol deposits in the eye, seen more frequently with aging and ______
Arcus senilis
chronic hyperlipidemia
______ a yellowish patch on the skin surrounding the eyelid, is caused by buildup of _____ under the skin.
Xanthelasma
cholesterol
Central retinal artery occlusion is classicaly characterized by ____ and _____
boxcar segmentation and cherry red spot on fovea
Ischemic optic neuropathy is due to ???? and ????
due to decreased blood flow to artery supplying anterior portion of optic nerve
and
Swelling of optic disk
What are two classic signs of macular degernation? what kind does each represent?
neovascularization (wet) and retinal drusen (dry)