Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Contact Lens Lab I > Unit 1 > Flashcards

Unit 1 Flashcards

0
Q

The normal cornea is transparent due to a pumping action which creates a proper fluid balance.

Which layer of the cornea is responsible for maintaining this function?

A

Endothelium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

The normal cornea is in a stage of….?

A

Deturgesence

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The main supply of oxygen to the cornea is derived from the…?

A

Tear film

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the normal test break up time?

A

12-15 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the distance between the upper and lower eyelid margins called?

A

Palpebral fissure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The pre-corneal tear film is composed of 3 distinct layers. What are they?

A

Lipid, lacrimal, mucin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the outer layer of the cornea?

A

Epithelium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the layer directly beneath the epithelium of the cornea?

A

Bowman’s Membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the junction of the sclera and cornea called?

A

Limbus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Muller & Levator are two eyelid muscles that do what?

A

Raises lids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Riolan

A

Holds lid against eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The Orbiculcris muscle does what?

A

Closes eyelids.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The Moll gland is what type of gland?

A

Lub & sweat.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The Meibomian gland is what type of gland?

A

Oil

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Conjunctiva is made of 3 sections.

A

Palpebral
Bulbar
For mix

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Main tear glands?

A

Lacrimal

Reflex tearing.

17
Q

Accessory tear glands?

A

Krauss and Wolfring

Regular tearing.

18
Q

Conjunctiva

Epithelium

A

Goblet cells, tear layer/mucus

19
Q

Cornea

Radius of curvature

A

Avg. 7.85mm

20
Q

Cornea

Power

A

Avg. 43.00 D

21
Q

Cornea

Diameter

A

Avg. 11-12mm

22
Q

Cornea

Thickness

A

.5mm central and 1mm edge.

23
Q

Cornea gains energy by?

A

Glycolysis

24
Q

The cornea is?

Avascular or vascular?

A

Avascular

27
Q

The Zeis gland is what type?

A

Lub & Oil

Contact Lens Lab I (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions