[ kăn-thŏt′ə-mē ] n.
An incision of the canthus
.
What is a Canthotomy?
Definition.
The incision or cutting through the canthus
. Supplement. The procedure is often performed to release excessive orbital pressure, especially due to orbital hemorrhage or infection.
When do you do a lateral Canthotomy?
Lateral canthotomy and cantholysis should be performed for
ocular compartment syndrome
(most commonly caused by retrobulbar hemorrhage) with acute loss of visual acuity, relative afferent pupillary defect, increased IOP, and proptosis.
What is the purpose of a lateral Canthotomy?
Lateral canthotomy and cantholysis (LCC) is a simple pro- cedure
used to decompress a compartment syndrome of the orbit
. It is most often used in cases of blunt trauma, when bleeding into the retrobulbar space causes an increase in pressure resulting in ischemia to the retina and optic nerve.
How do you do lateral Canthotomy and Cantholysis?
Use iris scissors to cut
from the lateral canthus to the rim of the orbit, about 1 to 2 cm (canthotomy). Cut the inferior and sometimes both crus of the lateral canthal ligament (cantholysis). Most experts recommend starting with the inferior crus. Lift the lateral portion of lower eyelid.
What is Enophthalmus?
Introduction. Enophthalmos is defined as
the posterior displacement of the globe in an anteroposterior plane within the orbit
. This is to be distinguished from hyperglobus, hypoglobus, esoglobus, and exoglobus.
What does Cantholysis mean?
Cantholysis involves
the incision and lysis of the inferior and/or superior canthal tendon and associated ligamentous fibers
. Surgery begins with a canthotomy. Upon completion of the canthotomy, the lateral canthal tendon is composed of inferior and superior canthal tendon limbs.
How does a lateral Canthotomy work?
Orbital compartment syndrome is an ophthalmic emergency that can lead to rapid blindness if not promptly diagnosed and managed. Lateral canthotomy and cantholysis is the treatment of choice and
involves surgically exposing the lateral canthal tendon and its inferior crus to relieve intraorbital pressure.
What is the lateral canthus?
Lateral canthus:
the lateral confluence of upper and lower eyelid margins
. Sclera: the collagenous outer wall of the eyeball.
How do you test for proptosis?
Hertel exophthalmometry
is a well-accepted tool to quantitate proptosis. The base is determined by the interlateral canthal space. The transection of the central cornea by the premarked millimeter ruler records the amount of anterior displacement of the globe. Its use requires intact lateral orbital rims.
What is lateral Canthoplasty?
Lateral canthoplasty is
a procedure in which the lateral canthus is fixed (anchored) to the lateral orbital rim after surgical division
(lateral cantholysis). It is usually performed with lower blepharoplasty in order to correct the laxity and malposition of the lower lid [1].
What is a lateral tarsal strip procedure?
GENERAL CONSIDERATIONS: The lateral tarsal strip procedure has
the combined effect of increasing horizontal lid tension and adjusting the level of the lateral canthus
. The technique involves a lateral canthotomy and transection of a portion of the lateral canthal tendon (cantholysis).
Which of the following is a marker of a successful procedure after performing a lateral Canthotomy and Cantholysis?
A successful procedure is marked by
improved visual acuity
, resolution of a previously detected afferent pupillary defect, and decrease in IOP to below 40 mm Hg.
What is a horizontal lateral Canthotomy?
Lateral Canthotomy and Inferior Cantholysis
The lateral palpebral fissure is
cut horizontally including the skin, the orbicularis oculi muscle and the conjunctiva
. The superficial fanning fibers of the lateral canthal tendon are also transected. The lower eyelid is now everted using the traction sutures.
What is orbital compartment syndrome?
Orbital compartment syndrome is
an uncommon, ophthalmic surgical emergency characterized by an acute rise in orbital pressure
. When intraorbital tension rises, damage to ocular and other intraorbital structures, including irreversible blindness, may occur if not promptly treated.
What is the CPT code for Canthotomy?
Review of CPT codes, including codes in the eye and ocular adnexa section, reveals certain services designated as “separate procedures.” An example of such a code would be CPT
67715
, Canthotomy (separate procedure).
