Eye Flashcards Preview

Surgery > Eye > Flashcards

Flashcards in Eye Deck (20):
1

Microbes for Bacterial conjunctivitis

Staphylococcus
Streptococci
Haemophilus

2

Pterygium

Benign growth of conjunctiva
UV light

Tx: avoid UV

3

Stye

Bacterial infection of eyelash follicle

Topical ABX +/- drainage

4

Chalazion

Blockage of Meibomian glanf (aka Tarsal gland)

Warm compress, steroid injection, incision and curette

5

Blepharitis

Staphylococcus infection
Bilateral eyelid inflammation
Crusts, oily secretion

Lid hygiene, topical ABX, Tetracycline

6

Hypopyon

Pus in anterior chamber

7

Uvea made of

Iris (outer)
Ciliary body
Choroid

8

DDx of sudden vision reduction (Emergency)
Rev

1. Acute angle closure glaucoma
2. Giant cell arteritis

9

Eye PE

1. Visual acuity
2. Visual field
3. Pupil, RAPD
4. EOM
5. Fundoscopy

10

Giant cell arteritis

Vision blur/loss
Headache
Jaw pain

11

Ischemic optic neuropathy

Microvascular infarction of nerve

Sudden, painless, unilateral vision loss

Optic disc swollen or normal (posterior can't see)

Anterior (more common) ION
- Ischemic damage to posterior ciliary arteries
- Arteritic or non-arteritic

Posterior ION
- Unilateral or Bilateral
- Systemic hypotension, most common during cardiac bypass, prolonged spinal surgery; also in cranial surgery, trigeminal zoster, systemic vasculitis

12

Isolated CN3 palsy

Deviate Down + Out

CN3 supplies
1. Levator palpebrae
2. Superior/Medial/Inferior rectus
3. Inferior oblique
4. PS fibers to iris sphincter

Nerve to pupil is peripheral - surgical cause if affected

Cause
1. Intracranial aneurysm (esp in P-Com)
2. Microvascular infarction within the nerve (asso w/ DM, HT)
3. Trauma
4. Cerebral herniation
5. Brain tumor

13

Flashers, floaters

Fundoscopy for retinal detachment

If central vision involved (macula) -> irreversible damage

14

Horner syndrome Ix

MRI from base of brain to mid-thoracic

CTA/MRA to r/o carotid a. dissection

15

CN6 palsy

Limited abduction

BP, FG, lipid, fundoscopy for papilledema

Neuroimaging if no resolution

16

BRVO
Branch retinal v occlusion

Arteriosclerosis --> retinal v compression --> thrombotic occlusion

RF: HT, DM

S/S: Retinal hemorrhages, macular edema, ischemia, neovascularization

17

Vitreous hemorrhage VH

Rupture of pre-retinal new vessels

S/S: Vision loss, loss of red-light reflex

No RAPD

18

Uveitis

Keratitic precipitates

19

Scleritis

Painful

Cx
- Scleral melting
- Corneal melting
- Posterior scleritis

Asso w/ RA, Wegener's granulomatosis

20

Staphylococcal marginal keratitis

- Type 3 HS
- Sterile infiltrate when lid touch cornea
- Must r/o infectious keratitis before steroids
- Treat underlying cause (blepharitis)