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anatomy of optic nerve and its blood supply and clinical corelation
Presentation Layout: optic nerve anatomy
Embryology of optic nerve
Introduction
Parts of optic nerve
Blood supply
Clinical significance
For Further Reading
Wolff’s Anatomy of the eye and orbit by Bron, Tripathi and Tripathi
Anatomy and Physiology of eye by A.K. Khurana 2nd edition
Comprehensive Ophthalmology by A.K. Khurana 5th edition
AAO- Fundamentals & Principles of Ophthalmology : sec 2
Walsh and Hoyt’s Clinical Ophthalmology
Internet
Direct Download Link ❤❤https://healthkura.com/eye-ppt/28/❤❤
Dear viewers Check Out my other piece of works at ❤❤❤ https://healthkura.com/eye-ppt/❤❤❤
anatomy of optic nerve and its blood supply and clinical corelation
Presentation Layout: optic nerve anatomy
Embryology of optic nerve
Introduction
Parts of optic nerve
Blood supply
Clinical significance
For Further Reading
Wolff’s Anatomy of the eye and orbit by Bron, Tripathi and Tripathi
Anatomy and Physiology of eye by A.K. Khurana 2nd edition
Comprehensive Ophthalmology by A.K. Khurana 5th edition
AAO- Fundamentals & Principles of Ophthalmology : sec 2
Walsh and Hoyt’s Clinical Ophthalmology
Internet
3. Introduction
Oculomotor nerve consists of two components with
distinct functions:
Somatic motor
(general somatic efferent)
Supplies 4 of the 6 extraocular
muscles of the eye and the
levator palpebrae superioris
muscle of the upper eyelid.
Visceral motor
(general visceral efferent)
Parasympathetic innervation
of the constrictor pupillae and
ciliary muscles.
4.
5.
6. From To
Uncrossed
fibers
ipsilateral
oculomotor
nucleus
Medial rectus.
Inferior rectus.
Inferior oblique.
Crossed
fibers
Contralateral
oculomotor
nucleus
Superior rectus.
Crossed and
uncrossed
fibers
Both
oculomotor
nuclei
Levator palpebrae
superioris muscle.
Uncrossed
para-
sympathetic
fibers
Ipsilateral
Edinger
Westphal
nucleus
Constrictor pupliae
muscle.
Ciliary muscle.
10. Origin
Oculomotor nucleus:
• Tegmentum of midbrain at the level of
superior colliculus.
• Ventral to the peri-aqueductal grey matter.
• It is column shaped nucleus & consists of
complex subnuclei.
11.
12. Edinger Westphal nucleus:
• The Edinger Westphal nucleus form the
parasympathetic general visceral efferent
(GVE) component of the nuclear complex.
• It is located medial to the rostral end of the
oculomotor nucleus.
13. Central segment
The central segment courses ventrally
• From the midbrain tegmentum,
• through the red nucleus,
• to emerge from the medial aspect of the
cerebral peduncle.
22. Cavernous segment
• The oculomotor nerve enters the cavernous
sinus superior to the petro-clinoid ligament and
inferior to the inter-clinoid ligament.
• The cavernous segment of the oculomotor
nerve course through the lateral wall of the
cavernous sinus superiorly.
• It is surrounded by CSF dural cuff (oculomotor
cistern).
25. Orbital segment
• The oculomotor nerve enters the orbit through
the superior orbital fissure within the annular
ring or Zinn.
• It divides into superior and inferior divisions.
• The superior division supplies the contralateral
superior rectus & levator palpebrae superioris
muscles bilaterally.
• The inferior divison supply the ipsilateral inferior
& medial recti & inferior oblique muscles.
