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Special Senses > OPTHAMOLOGY > Flashcards

OPTHAMOLOGY Flashcards

1
Q

What muscle closes the eyelid

A

Obiluaris oculi

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2
Q

What muscles opens the eyelid

A

Levator palpebra superioris

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3
Q

What does the conjunctiva produce

A

Mucins from goblet cells

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4
Q

Whats in tear film layer

A

Mucin, aqueous, oil

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5
Q

Components of lacrimal system

A

Lacrimal duct, canillicuil, lacrimal sac, lacrimanl duct

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6
Q

What is a subconjunctiveal haemorrhage

A

Increase in pressure ruptures capilliaies

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7
Q

Causes of ptosis

A

COngenital, involutional, neurogeneic, trauma

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8
Q

What does 3rd cranial nerve palsy cause

A

Complete ptosis, extraoccular muscle loss, dilated pupil (PS travels with 3rd nerve). Consider PCA aneurysm

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9
Q

What is horners syndrome

A

Partial ptosis, subtle miosis, anyhydrosis

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10
Q

Thyroid eye disease

A

Autoantibodies cause fibroblast in occular muscles to become fat cells/ become oedematous block off veins increase ocular press. Lid problems protrusion of eyeball

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11
Q

If you have a short eye

A

Hyperoppia, LS.

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12
Q

Long eye

A

Myopia. SS

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13
Q

Astigmitsim

A

Light focused in different areas of eye

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14
Q

How do we exam the cornea

A

Slit light exam

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15
Q

What happens if endothelial pump in cornea dysfunctional

A

H2O no longer pumped out, oedematous, opaque cornea. Can cause keratoconus

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16
Q

Function of cornea

A

Refracts light

17
Q

What does the lens do

A

Variable power refraction

18
Q

What is cataract

A

Clouding of lens

19
Q

What do cilliary muscles do

A

Change lens focus power

20
Q

What connects lens to cilliary muscles

A

Zonules

21
Q

Function of the retina

A

Absorb light, translate into biochemical then electrical signals to optic nerve.

22
Q

What is the fovea

A

Area on retina closely packed cones for sharp central vision held within macula

23
Q

What causes blindspot

A

No rods/cones in optic nerve

24
Q

What is glaucoma

A

Optic neuropathy associated with increased intraoccqular pressure can be open or closed angle.

Special Senses (12 decks)

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