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8 Cards in this Set

  • Front
  • Back
INFERIOR OBLIQUE

OIAI
G. Inferior oblique

1. Origin: orbital surface ofthe maxilla, lateral to the fossa for the lacri-
mal sac

2. Insertion: courses laterally and posteriorly, between the inferior rectus
and floor of the orbit, and inserts into the sclera ofthe inferolateral quad-
rant ofthe posterior half of the eye

3. Action: moves the pupil superiorly and laterally

4. Innervation: inferior branch ofthe oculomotor nerve
FASCIAE: PERIORBITA
H. Fasciae

1. Periorbita: periosteum covering the walls ofthe orbit: it is continuous
at the orbital margin with the orbital septum and pericranium
FASCIAE: INTERMUSCULAR MEMBRANE
H. Fasciae

2. Intermuscular membrane: composed of four fascial sheets interposed be-
tween, and continuous with, the fascial sheaths ofthe tour rccti muscles;
the intermuscular membrane and fascial sheaths ofthe recti muscles en-
close the retrobulbar space
BULBAR SHEATH
(TENON'S CAPSULE)
3. Bulbar sheath (Tenon's capsule)

a. Fascial covering ofthe posterior, unexposed part of the sclera; an
episcleral space lies between the bulbar sheath and sclera
BULBAR SHEATH
(TENON'S CAPSULE)

*tendons of recti + oblique muscles pass through....
3. Bulbar sheath (Tenon's capsule)

b. The tendons of the recti and oblique muscles pass through the episcleral
space to reach their insertions on the sclera; as they pierce the bulbar
sheath, their own fascial sheaths become continuous with it
FASCIAE

MEDIAL AND LATERAL CHECK LIGAMENTS
H. Fasciae

4. Medial and lateral check ligaments: medial and lateral hon/.ontal exten-
sions of the fascial sheaths of the medial rectus and lateral rectus, re-
spectively; they attach to the lacrimal and zygomatic bones, respectively,
and restrict eye movements
FASCIAE

SUSPENSORY LIGAMENT OF THE EYE (LOCKWOOD'S LIGAMENT)
H. Fasciae

5. Suspensory ligament ofthe eye (Lockwood's ligament')

a. Formed by medial and lateral extensions of tlie fascial sheath ofthe
inferior rectus; they attach to the medial and lateral check ligaments,
respectively, forming a fascial sling below the eyeball
FASCIAE

SUSPENSORY LIGAMENT OF THE EYE (LOCKWOOD'S LIGAMENT)

CLINICAL NOTE
H. Fasciae

5. Suspensory ligament of the eye (Lockwood's ligament')

b. Clinical note: entrapment ofthe suspensory ligament ofthe eye when
reducing a fracture of the floor of the orbit may render the eye
immobile