RANGEEN CHANDRAN R
SUPERIOR TARSAL MUSCLE Origin-Undersurface of levator palpebrae superioris. Insertion-superior tarsal plate of upper eye...
CLINICAL Peripheral arterial arcade between levator aponeurosis  and upper border of superior tarsal muscle. So plane of...
 In thyroid eye disease,fibrosis and mast cell infiltration  of muscle occurs. Partial ptosis-in Horner’s syndrome(2mm p...
INFERIOR TARSAL MUSCLE Origin-Capsulopalpebral fascia. Insertion-Inferior tarsal plate. Nerve supply-Post ganglionic sy...
ORBITALIS MUSCLE Vestigial muscle. Orbital muscle of muller. Crosses inferior orbital fissure and sphenomaxillary  fiss...
CLINICAL Paralysis of orbitalis- enophthalmos                (Horner’s syndrome)
Involuntary extraocular muscles
Involuntary extraocular muscles
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Involuntary extraocular muscles

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Involuntary extraocular muscles

  1. 1. RANGEEN CHANDRAN R
  2. 2. SUPERIOR TARSAL MUSCLE Origin-Undersurface of levator palpebrae superioris. Insertion-superior tarsal plate of upper eyelid. Nerve supply-postganglionic sympathetic fibres of superior cervical sympathetic ganglion. Action-elevation of upper eyelid.
  3. 3. CLINICAL Peripheral arterial arcade between levator aponeurosis and upper border of superior tarsal muscle. So plane of dissection created between levator aponeurosis and superior tarsal muscle.
  4. 4.  In thyroid eye disease,fibrosis and mast cell infiltration of muscle occurs. Partial ptosis-in Horner’s syndrome(2mm ptosis)
  5. 5. INFERIOR TARSAL MUSCLE Origin-Capsulopalpebral fascia. Insertion-Inferior tarsal plate. Nerve supply-Post ganglionic sympathetic fibres of superior cervical sympathetic ganglion Action-lower lid retraction.
  6. 6. ORBITALIS MUSCLE Vestigial muscle. Orbital muscle of muller. Crosses inferior orbital fissure and sphenomaxillary fissure. Unites with periosteum of orbit. Action-Forward protrusion of eyeball. Nerve supply-post ganglionic sympathetic fibres from superior cervical sympathetic ganglion.
  7. 7. CLINICAL Paralysis of orbitalis- enophthalmos (Horner’s syndrome)

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