Special Senses pathologies

Question 1

strabismus

Answer 1

“lazy eye”
wandering eye; eyes don’t track together

Question 2

nystagmus

Answer 2

rapid involuntary eye movement
( often a sign of brain injury)

Question 3

cataracts

Answer 3

common cause of blindness due to loss of transparency in lens ( cloudy)
due to aging, injury, excessive UV exposure, medications, diabetes, smoking
can be fixed with surgery

Question 4

night blindness

Answer 4

loss of functional rods for detecting dim light
or
vitamin A deficiency

Question 5

hyposmia

Answer 5

impaired sense of smell due to aging, smoking, head injuries, brain tumour, alzheimers, Parkinson’s or medications

Question 6

glaucoma

Answer 6

most common cause of blindness.
associated with age and unmanaged diabetes.
high intraocular pressure compressing the lens puts pressure on retina leading to damage of optic nerve.
painless. irreversible.

Question 7

colour blindness

Answer 7

genetic defect.
sex linked. more common in males
absense of red or green most common

Question 8

myopic

Answer 8

near sighted

Question 9

hyperopic

Answer 9

far sighted

Question 10

astigmatism

Answer 10

irregularities int he surface of the cornea