EENT Flashcards
Proper way to conduct an eye exam
right hand, right eye, right eye start with wheel at 0 start 12' away move in to 1-2" away after red reflex, then exam from the optic disc and end with the fovea of each eye
what is the shape of the optic disc
Doughnut-like with an orange/pink neuroretinal rim and a central white depression (physiologic cup)
What should the cup/disc ratio be?
cup should not be more than 1/2 the size of the disc diameter
consider________ if the cup is more than 1/2 the size of the disc diameter
glaucoma
describe retinal vessels
arteries are brighter red and narrower than veins
A:V ratio 2:3 or 4:5
Where is the macula located
centered 2-2.5 disc diameters temoral to the optic disc and is avascular
What are the characteristics of the fovea centralis
2.5mm diameter reflective area that looks slightly darker and lies in the center of the macula region
have the patient look______ if the macula is difficult to visualize
directly into the light
What is hyperopia
Farsightedness, gero patient
What is myopia
Nearsightedness, younger patients
What is presbyopia
lessing of the crystalline lens and weakening of the ciliary muscles which controls the lens focusing leading to greater difficulty maintaining a clear focus at a near distance. Common after age 40
At what snellen do you refer a patient
20/30
What is arcus senilis
cloudy appearance of the cornea with a gray/ white arc or circle around the limbus due to the disposition of LIPID material. No affect on vision
S/SX of a hordeolum (stye)
abrupt onset, pain, erythema
localized tender mass developing in the eyelid
management of the hordeolum
warm compresses to bring to a head
Topical bacitracin or erythromycin opthalmic ointment
Refer to ophthla if no resolution in 2 days
Chalazion definition
beady nodule on the eye lid, infection or retention cyst of a meibomian gland, usually on the upper eyelid
What differentiates a hordeolum and a chalazion
hordeolum hurts
S/SX of chalazion
swelling on the eyelid eyelid tenderness sensitivity to light increased tearing if large: can cause astigmatism due to pressure on the cornea
Management of chalazion
warm compresses, refer for surgery
define blepharitis
staph or seborrheic dermatitis of the lid edge
s/sx of blepharitis
red, scaly, greedy flakes Thickened crusted lid margins Burning itching tearing
management of blepharitis
Hot compresses
Topical antibiotics, bacitracin or erythromycin
vigourous scrub
What should conjunctivitis not include in s/sx
pain
type of discharge with bacterial conjunctivitis
purulent
type of discharge with gonococcal or chlamydial conjunctivitis
copious purulent
Treatment for bacterial conjunctivitis
self limiting
Antibiotics drops: Levo, ofloxacin, cipro, tobra, gent
type of discharge with allergic conjunctivitis
stringy, increased tearing
Discharge for viral conjunctivitis
watery
management of allergic conjunctivitis
oral antihistamines, not gtt because can worsen glaucoma