eyelids 1

the grey line is the junction of

skin and conjuctival mucous membrane

anterior vs posterior eye anatomy

anterior

-orbicularis muscle

-skin

posterior

-conjuctiva

-meibomian gland

-mucocutaneous junction

gray line is also known as

muscle of riolan

main vs minor retractor

main: levator

innervation: CN 3

elevated by 15mm

minor: mullers

innervation: sympathetic nervous system

elevated by 3mm

what muscle aids in drainage of aqueous humor

horner’s

surrounds canaliculi

inferior retractors

analogous to levator: inferior tarsals aponeurosis

analogous to muller: inferior tarsal muscle

orbicularis oculi is innervated by which nerve?

CN 7

palpebral fissure distances

vertical 9-10 mm

horizontal 25-30mm

what is MRD?

marginal reflex distance

>measure from middle of pupil superior and inferior

ranges:
MRD1 (superior): 4mm

MRD2 (inferior): 5mm

palpebral fissure (addition of both): 9mm

epicanthic fold

upper or lower eye lid → medial canthi

tx:

V-Y or Z-plasty

most common type of epicanthal fold

palpebralis

*most common in cacucasians

fold in the upper eyelid is known as _________ and is most common in which ethnicities

tarsalis

orientals

fold in the lower lid is known as

inversus

*may be associated with syndromes

& blepharophimosis

what type of fold arise above the brown and extend downward?

superciliaris

what is this an example of ? (hypertelorism or telecanthus) and how do you know?

hypertelorism

due to smaller outer canthal distance

due to wide bony separation of the orbits

rare AD inherited syndrome

palpebral fissure 20-22mm (normal is 25-30mm)

poor levator muscle function

whats the dz?

BPES

which disorder presents vertical lashes?

epiplepharon

microphthalmos may cause ________ __________

congenital entropion

patients with this disease also have low ears

due to ______________

teacher collins syndrome

due to mandibulofacial dysostosis

what syndrome has syndactyly and what is it?

fraser syndrome

fusion of fingers or toes

eyelids that appear unusually wide or stretched are caused by which disease?

euryblepharon

this disease may present fish-like mouth & do not have eyelids

ablepharon

which disease presents a filament of skin that doesn’t open completely

Ankyloblepharon filiforme adnatum

districhiasis congenital vs acquired

congenital: dark and thick

acquired: thin and light

misdirection of growth

FBS

irritation

tearing

redness

trichiasis

aberrant lashes (lashes are where they shouldn’t be)

^appear in the grey line

districhiasis

excessive eyelash growth

trichomegaly

madarosis vs trichotillomania

madarosis: loss of lashes

trichotillomania: pt pulls out hair

*can tell due to new growth, which madarosis does not have

what disorder does this patient have?

trichotillomania

T/F poliosis is associated with uveitis

true