Untitled spreadsheet - plastics Flashcards
incision 1 cm above upper tarsus
conj, orbic septum, orbital fat, leavtor, muellers, conj
origin of orbital bones
neural crest
absorption of chromic gut sutures
20 days
why is upper lid retraction produced by Grave’s disease due to
overreaction of Mullers
pin 4 mm above eyelashes
skin orbic, elavtor, tarsus, conj
location of valve of hasner
underneath inferior trubinate of nose
neck surgery induced ptosis
horner’s syndrome
organism for chronic canaliculitis
actinomyces
jaw winking ptosis with fair levator function
excision of LA and fascia lata sling
are medial wall fractures associated with a floor fracture
yes
which Le Fort fractures is CSF rhinorrhea commonly seen
Lefort II and III
large vascular channel at superior tarssal border
peripheral arterial arcade beneath leavtor aponeurosis on surface of Mueller’s. this suggests LA is dehisced.
which nerves pass through superior part of SOF
lacrimal, frontal, trochlear
which nerves in inferior part of SOF
III, VI, and V.
how many fat compartment in upper and lower lid
2 in upper, 3 in upper. Lacrimal gland substitutes for lateral fat
most common location for an orbital meningocele
above medial canthus
what structures pass through inferior orbital fissure
pterygopalatina ganglion, maxillar nerve, pterygoid nerve, IOV
which structures pass through optic foramen
optic nerve, ophthalmic artery, sympathetic fibers
thrombocytopenia, strawberry skin nevi and subglottic hemangioma
kasabach-Meritt synrome
def of distichiasis
extra row of lashes
location of dermoid cysts in orbit in kids
anterior upper termporal oribt
6 features of crouzon
proptosis with shallow orbits, blue sclera, strabismus, congenital catarat, optic atrophy, ypertelorism
most common location of sebaceous carcinoma
upper eyelid
bone that form s lacrimal fossa
frontal
bones of medial orbit
SMEL- sphenoid, ethmoid, lacrimal, maxillary
bones of lateral wall
zygoma, and sphenoid
origin of lacrimal gland
surface ectoderm
location of rosenmuller’s valve
common canalicultis
course of infraorbital nerve
branch of V2, in infraorbital canal and exits orbit about 4 mm below inferior orbital rim
characteristic of tripod fractures
pain with mouth openingand chewing
bone of optic foramen and optic canal
lesser wing of sphenoid
orbital fat in T1 and T2
T1 bright, dark in T2
most common intracranial tumor to invade orbit
sphenoid wing meningioma
in DCR, what bony structures are removed during osteomy
lacrimal sac fossa and superior nasal wall of nasalacrimal duct removed
def of epiblepharon
horizontal fold of skin that overrides lid margin
triad of hand schuller christian disease
exophthalmos, lytic leison, DI
worse prognosis of histiocytosis X
letterer-Siwe- systemic spread of abnormally proliferating histocytes with rapid death.
what can be expressed from canaliculi infected with actinomyces
yellow sulfur granules
bones that form floor
maxilliary zygomatic, and palatine
what muscles separtes medialf rom central fat compatment in lower eyelid
inferior oblique muscle
what is hypertelorism?
increased distance between medial orbital walls
what is telecanthus?
increased distance between medial canthi of eyelids due to abnormally long medial canthi tendon.
what is Jones 1 test
fluoroscein in conj, after 5 min, cotton tip inserted in inferior tubrinate
what is Jones 2 test
fluorscein in puncta, irrigated, if saline in nose, partial obstruction of nasalacimral duct, if no luorsocein, it is in upper drainage system.
Lengths of part of lacrimal drainage system
ampula, (2m), canalicluls 98mm), nasolacrimal sac (10 mm), nasal lacrimal duct (12mm).
what condition is epicanthus inversus associated with
blepharophimosis
what are attachement os medial canthal tendon
superficial head of pre-tarsal and per-septal protions of orbicularis insert into anterior lacrimal cest , deep heads insert into posterior lacrimal crest.
