Exam 3 (Josh) - Eyes Flashcards
Which area of the brain sees with the most detail?
fovea centralis
Which is thicker in the eye, veins or arteries?
veins
Where is the physiological blind spot of the eye? How does brain compensate?
optic disk (where optic nerve enters) is a blind spot.
the brain compensates by coloring in the details
How do we tell arteries and veins apart when looking in the eye?
arteries are thinner and have a sheen
Explain this statement: “Humans are foveate animals?
we turn towards danger to focus on it (want to keep it in our area of greatest focus)
deer are not (they turn to keep the danger in their periphery)
What is the typical eye chart that we think of when we get a physical exam?
Snellen Alphabet Chart
Which eye chart is a smaller one you hold in your hand?
Jaeger Card
Which eye exam is useful for kids, from 11 months to 2.5 years old?
Allen Test
Which eye exam is another exam that is useful for illiterate adults or kids?
Snellen ‘Tumbling E’ Chart
Myopia means ———–
nearsightedness
Presbyopia means ———-
farsightedness (can’t see up close)
Diplopia means ——
double vision
What is the pathophysiology of presbyopia?
lens loses its elasticity, and thus it’s ability to accomodate for near vision
What are the most common causes of decreased visual functioning in older adults?
Cataracts
Glaucoma
Age-related Macular Degeneration (AMD)
Diabetic Retinopathy
—— is a clouding of the lens by a clump of proteins. It is curable w/ lens replacement surgery.
Cataracts