Identify:

Orientate yourself macroscopically with respect to the eye by identifying the following structures:

• The eyeball and the cornea situated anteriorly.

• Cornea

• Limbus

• Sclera

• Choroid

• Ciliary body

• Iris - anterior and small posterior chambers

• Lens [if present]

• Retina

• Large posterior chamber and vitreous body

• Optic nerve [if present]

Microscopic

1. Epithelium

• The different layers comprising the epithelium.

• The shape of the cells in the different layers of the epithelium.

2. The eye

1. The cornea

   • The different layers of the cornea

2. The Limbus

   • The different layers of this area

   • The Canal of Schlemm

   • Pectineal ligament

3. The Sclera

4. The conjunctiva

   • Epithelium

   • Connective tissue

5. The Choroid

   • The different layers of the choroid

6. The Ciliary Body

   • The different structures of the ciliary body

7. The Iris

   • The different layers of the iris

8. The Retina

   • The different layers of the retina

   • The ora serrata

Draw and annotate:

A few epithelial cells of each layer showing the different cell shapes.

A line diagram of the eye, including detail of a small part of each of the different elements that make up the eye.

1. How many cell layers form this epithelium and how thick is each one of these layers in relation to one another?
2. How does the shape of the cells in each layer change?
3. What is characteristic of the junction between this epithelium and the underlying support structures (connective tissue)? Are papillae present?
4. What types of epithelium are found in the cornea?
5. What membranes and types of support tissue are connected to the cornea?
6. How do the layers of the limbus of the cornea differ from those of the sclera and conjunctiva?
7. What type of epithelium forms the Canal of Schlemm?
8. What are the characteristic features of the ciliary zonule of lens?
9. What type of support tissue is associated with the sclera?
10. What type of epithelium covers the conjunctiva?
11. What type of support tissue is associated with the conjunctiva?
12. What are the layers of the choroid?
13. What is the membrane of Bruch and what cells make up this membrane?
14. What structures does the ciliary body consist of?
15. What is characteristic of the epithelium of the ciliary body?
16. What types of muscle forms the iris?
17. How is the ora serrata identified?
18. What are the layers of the fovea?
19. What structures connect to the optic disk?

Very low magnification

Medium magnification

High magnification

• Corneal epithelium
• Corneal epithelium: focus
• Corneal epithelium
• Corneal epithelium
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• Magnifier
• Scroller