Opthalmic Flashcards
why should lubrication gel be used before clipping
prevents haird entering conjunctival sac
what should be used to scrub the area
1:50 (0.2%) iodine/saline solution
alternate with sterile saline
avoid scrub - irritates cornea
name the instrument
Barraquer eyelid apeculum
used to keep eye open
name the instrument
Jaeger eyelid plate
protects globe, flattens lid
name the instrument
bishop-harmon forceps
pointed to grasp conjunctival tissue
name the instrument (indicated by red arrow)
derf needle holder
small suture/needle needs smaller holder
name the instrument
stevens tenotomy scissors
used for optho only - needs to be very sharp and pointed; used to resect and cut skin
what can be used to establish hemostasis
direct pressure with cotton tipped applicator
wedge shaped cellulose sponges
4 x 4 sponges
hand held cautery
phenylephrine
1:10,000 epinepthrine
common surgical disease of eyelids
eyelid lacerations
eyelid tumors
eyelid agenesis
entropion
ectropion
how many layers should be closed in eyelid lacerations
2
- deep layer - bites perpendicular to eyelid, avoid conjunctiva; simple continuous*
- skin - figure 8; places knot away from cornea*
if an eyelid mass on a dog is ________ of the eyelid margin, treat it like a ___________
if an eyelid mass on a dog is <1/3 of the eyelid margin, treat it like a laceration
eyelid reconstruction techniques
single pedicle advancement flap
lid to lid flap
semicircular flap
T/F most canine eyelid tumors are benign
True - 73% are benign
what technique is used to remove eyelid tumors
H-shaped resection
allows less lid margin resection
what is the most common feline eyelid tumor
squamous cell carcinoma
Px guarded
when should surgery be perfomed with eyelid agenesis
> 4 months
want to have mature facial folds sp not continuously repeating Sx
T/F eyelid agenesis is primarily seen in felines and small defects can be treated medically
true
what procedure is used to surgically correct eyelid agensis
Dziezye Millichamp Mucocutaneous Pedicle Graft
surgical options for correcting entropion
eyelid tacking
hotz celsus
modified hotz celsus
arrowhead resection
when is eyelid tacking used to correct entropion
pateint not reached facial maturity
leave for 4 weeks or until age for Sx
which procedure is seen here
Hotz Celsus - Incision Method
when is the arrowhead resection used
concurrent upper and lower lateral canthal entropion
Surgical techniques to treat ectropion
wedge resection
V-Y blepharoplasty
diseases of the nasal lacrimal system
punctal aplasia
micropunctum
trauma and scaring
KCS (medical management)
surgical diseases of nictating membrane
everting nictating membrane
prolapsed nictating membrane (cherry eye)
neoplasia
surgical options for correcting cherry eye
excision of nictitating membrane
orbital rim anchoring techniques
pocket techniques
why is excision of nictitating membrane not recommended
important for tear production
can lead to KCS
most common neoplasm of nictitating membrane
SCC
others include: hemangiosarcoma, adenocarcinoma, fibrosarcoma
indications for enucleation
painful non visual eye
neoplasia and non responsive infections
surgical enucleation techniques
subconjunctival approach
transpalpebral approach
when to enucleate with traumatic proptosis
2 or more rectus muscles avulsed
globe is ruptured
________ regain vision after reduction of traumatic proptosis
20% regain vision after reduction of traumatic proptosis
more for cosmetic purposes
what is the name of the procedure used to reduce prolapsed eye
temporary tarsorrhaphy
indications for temporary tarsorrhaphy
lid reconstruction
entropion/ectropion correction
laceration
mass removals
proptosis
