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Year 2 anatomy > Ophthalmology > Flashcards

Ophthalmology Flashcards

1
Q

What part of the orbit is most suseptable to blow out fractures?

A

Medial wall

and

Floor

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2
Q

What are the two parts of the orbicularis oculi

A

Orbital and palpebral parts

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3
Q

What muscles moves the eye lid?

A

Levator paplebrae superioris

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4
Q

What are the glands under the eyelid called and what do they secrete?

A

Tarsal glands

Secrete lipids

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5
Q

What is the junction betweent the cornea and sclera called?

A

The limbus

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6
Q

What is the outermost layer of the eye?

A

Conjunctiva

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7
Q

What supplies the lacrimal gland?

A

Facial nerve

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8
Q

What is the tear drainage hole called?

A

Canaliculi

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9
Q

What are the three layers of the eye?

A

Fibrous outer layer

Uvea

Retina

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10
Q

What makes up the fibrous layer of the eye?

A

Sclera and Cornea

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11
Q

What makes up the uvea ?

A

Iris

Ciliar body

Choroid

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12
Q

What are the segments and chambers of the eye?

A

Anterior segment

Anterior chamber between cornea and iris

Posterior chamber beween iris and suspensory ligaments

Posterior segment

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13
Q

What type of humour is in the anterior segment and what type is i the posterior segment?

A

Aqueous humour anteriorly

Vitreous humour posteriorly

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14
Q

What is the blind spot?

A

The optic disc

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15
Q

What are the layers of the retina?

A

Axons of ganglion cells

Ganglion cells

Photoreceptors

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16
Q

What is the arterial supply to the fundus?

A

Ophthalmic artery

(branch of the internal carotid artery)

17
Q

What are the vessles in the optic nerve called?

A

Central artery/vein of the retina

18
Q

What are the extraocular muscles?

A

Superior, medial, inferior rectus

Lateral rectus

superior oblique

Inferior oblique

Levator palpebrae superioris

19
Q

Where do the extraocular muscles origonate from?

A

Common tendinous ring

20
Q

What is the H for testing eye movements?

A
21
Q

What nerve supplies the cornea, conjunctiva and upper lid

What nerve supplies the lower eyelid

A

V1 upper eye

V2 lower eye

22
Q

What is the afferent part of the corneal reflex and what is the efferent part?

A

Afferent part - tigeminal nerve V1

Efferent part - Facial nerve

23
Q

How do sympathetics reach the levator palpebrae superioris?

A

Internal carotid plexus

24
Q

What is the name for a non-physiologically constricted pupil?

A

Miotic pupil

25
Q

What is a fixed “pin point” pupil a sign off?

A

Opiate drugs

26
Q

What is a “fixed-dilated” pupil a sign off?

A

Oculomotor pathology

27
Q

What nerve is responsible for the afferent and efferent components of the pupillary light reflex?

A

afferent - optic nerve

Efferet - oculomotor nerve

28
Q

What happens when cillary muscles contract?

A

Lens becomes squished and gets thicker

used for near vision

29
Q

Does contraction or relaxation required parasympathetic activity?

A

Contraction

30
Q
A

Year 2 anatomy (5 decks)

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