ICM_FALL_FINAL_MSI Flashcards
Accommodation: CN? What occurs
CN III - Oculomotor; Lens shape & focal length change; : Change shape of lens (increase convexity to focus on near objects)
Oculomotor CNIII; What muscles?
MR, IF, SR, IO
Trochlear CNIV; What Muscles?
SO
Abducens CNVI
LR
What eye muscles tested in the H test? in each position?
RSR RIO/LIO LSR
RLR RMR/LMR LLR
RIR RSO/LSO LIR
What two CN for pupil innervation?
CN II , CNIII
Raccoon eyes
basilar skull fracture/facial fractures; blood from skull seeps into soft tissue around eyes bilaterally
Battle’s Sign
postauricular ecchymosis- fracture line communicates with mastoid air cells results in blood in cutaneous tissues – named after dr William battle
• Seborrheic dermatitis
dandruff; greasy, yellow, scaly, puritic/itchy
• Alopecia
Hairloss
• Psoriasis
pink plaques; no hair loss
• Tinea capitis
- “scalp dermatophytosis”- Fungal infection- follicular inflammation- Painful- Hairloss-Extremely Puritic- Transmitted person/person- treat w/ antifungal cream
• Cushing’s
+Excessive Cortisol; Obesity; Moon Face; Red Cheeks; Buffalo Hump
• Down’s
Upslanting features/protruding tongue/heart defects/
• Acromegaly
Excessive GH/All bones Enlarged
• fetal alcohol syndrome
: Microcephaly/small eye/Smooth Philtrum/thin upper lip/deficient growth/Intellectual disability
• Bell’s palsy
Facial nerve paralysis CNVII; Cant close eye/Uneven Smile/; o Treament Antiviral/Steroid/ lubrication for eye
- List the different types of strabismus and know how they differ
- ESOTROPIA: Convergent : Inward eye (LR6 defective)
* EXOTROPIA: Divergent: Outward Eye (CN3 defective)
What does eye do in palsy of CN 3,4,6 respectively
3- down/out
4- affected eye turns UP when looking to nose
6- inward
Describe Horner’s Syndrome :
• PTOSIS (Upper lid drooping), MIOSIS: (constricted pupil), ANHIDROSIS (no sweat on affected side)
- Define Adie’s pupil:
Tonic: Mydriasis- DILATION- reduced reaction to light- Slow near reaction (accomodation)
• dacrocystitis
-Lacrimal Sac Inflammation (bacterial)- Abiotic/Drainage incision if needed
• periorbital cellulitis
Eyelid Infection- Bacterial-usually spreads from sinusitis or dacryocystits- oral abiotics
• chalazion
Eyelid Swelling from blocked sebaceous glands-granulomas/Chronic/not tender- warm compresses/surgical drainage
• hordeolum
STYE- pimple/boil of eyelid- STAPH/warm compress/topical abiotic/ incision drainage
Pingueculum
Yellow thickening conjunctiva on sclera- few symptoms, no vision loss. irritation
pterigium
Elevated growth of scleral conjunctiva invades cornea/ benign/surgically removed if vision impaired
• scleral icterus
Yellowing of Sclera-Elevated Bilirubin-Liver disease
exophthalmos
- protrusion of eyeballs-bilaterally- THYROID DISEASE
Conjunctivitis
Bacterial/Viral/Allergic-red conjunctiva/irritating/mucopurulent discharge/vision not affected
Episcleritis
Inflammation of episcleral vessels between conjunctiva and sclera (vessels appear movable over scleral surface)- idiopathic
• Uveitis
(uvea: iris, ciliary body, choroid) Painful Aching, Sensitive to light-photophobia, Blurry Vision, No discharge- Treat with steroids to decrease inflammation- Always in conjunction w/ an ophthalmologist.
Hypopon
pus in anterior chamber (behind cornea/anterior to iris)
• subconjunctival hemorrhage
Blood between conjunctiva/sclera-sharp demarcations-painless-spontaneous- no treatment needed other than reassurance
• hyphema
- Post injury blood in anterior chamber/may be sign of major intraocular trauma- can have vision loss, glaucoma, corneal bloodstaining, or optic atrophy