1What are the functions of the eyelid?
Spread Tear layer, produce tear layer, drain tear layer, protect against foreign bodies.
2What is the palpebral fissure?
The area of the open eye
3Where is the tarsal portion of the eyelid?
Top of the eyelid to Superior palpebral sulcus (area where double eye is)
4Where is the orbital portion of the eyelid?
Superioir palpebral sulcus to eyebrow.
5What is the purpose of the plica semilunaris?
Allows for eye movement
6Where is the lacrimal lake?
Plica semilunaris to caruncle.
7What is the punctum?
Hole that allows the tears to drain.
8What portion of the obicularis causes the eye to close forefully?
Orbital portion
9What portion of the orbicularis causes the eye to close gently?
Palpebral portion
10Describe the palpebral orbicularis oculi muscle orientation
semi-circular
11Describe the orbital orbicularis oculi muscle orientation
concentric
12What 2 muscles are in the palpebral portion of the orbicularis muscle contain?
Riolan's muscle (maintains lid proximity to globe) Horner's muscle (moves tears through the drainage system)
13What separates the lacrimal gland into its orbital (larger) and palpebral (smaller) parts?
Levator Aponeurosis
14What is the Whitnall ligament?
Area where levator muscle transitions into levator aponeurosis.
15What is the Lockwood ligament?
"Hammock" supporting the lower globe
16What is the function of the tarsal plate?
Houses meibomian glands, conforms tightly to glove and gives the lid rigidity.
17What is the separation of the mucocutaneous junction called?
Line of Marx
18What deficiency is associated with a loss of goblet cells?
Vitamin A deficiency
19What is the Tenon capsule?
Connective tissue inner to conjunctiva that protects globe and reduces friction.
20How are meibomian glands oriented?
In single rows, vertically
21What do Zeis glands secrete?
sebum