Class notes Thinking and Doing 2

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Case 5
Week Week 3

Column

Unit/Module Opthamology



nerves of the eye (innervation)

1. vascularisation

2. pupillary reflex

3. soft tissues

a. globe adnexa

b. lacrimal system

c. extraocular muscles




Movement of the eye
1. trochlear nerve

2. oculomotor nerve

3. abducens nerve




Anatomy of the eye
General characteristics




Case 5 1

, The adult eye is a complex organ
contained within the orbital cavity
(composed of 7 bones). Each eye has
multiple layers and chambers and is
surrounded by 6 extraocular muscles.

Layers of the eye:

Fibrous layer: sclera and
cornea

Vascular layer (the uvea):
choroid, ciliary body, and iris

Neural layer: retina and optic
nerve

Chambers of the eye:

Anterior: between cornea and Components of the orbit:
iris 7 extraocular muscles:
Posterior: between iris and Levator palpebrae superioris
lens
Superior oblique
Vitreous: between lens and
Inferior oblique
posterior eye wall
Lateral rectus

Medial rectus

Inferior rectus

Superior rectus

Lacrimal apparatus:

Lacrimal glands and their associated
ducts

Produce tears to provide lubrication

Nerves and blood vessels



Function: sense of sight

Refractive media directs and refracts light to the retina. Light travels through the:

Cornea

Lens




Case 5 2