Lecture 11 - Gonioscopy

Question 1

What is the purpose of gonioscopy?

Answer 1

to investigate the angle and look for any abnormalities that can cause glaucoma

Question 2

When do you preform Gonio, when you would like to relate Van Herik angles?

Answer 2

VH = Grade 2

Question 3

When light is directed through the cornea into the angle, what type of reflection has occurred and who causes this?

Answer 3

Internal reflection and caused by the cornea

Note: Gonioscopy is considered INDIRECT

Question 4

What type of lens is only meant for angle assessment only?

Answer 4

4 mirror

Question 5

When looking at the 3 mirror, what is true regarding views?

Answer 5

Inverted and angle is 180 degrees away

Question 6

What type of mirror of the 3 mirror, provides a view from equator to the ora?

Answer 6

Rectangular

Question 7

What type of view is provided by the trapezoid mirror?

Answer 7

Posterior pole to Equator

Question 8

Name the views what the D-shaped mirror provide?

Answer 8

Anterior view of the retina and AC angle

Question 9

What is the name of the center lens?

Answer 9

Hruby

Note: Its not a mirror and the image is not inverted

Question 10

What is the degree angles for the D, rectangular and Trapezoid mirrors?

Answer 10

D = 60
Rect = 66
Trap = 76

Question 11

When preforming Gonio, what must we tell our patients to do with their teeth?

Answer 11

Keep their teeth together

Question 12

Where would you like to insert the gonio lens?

Answer 12

Lower Cul De Sac

Question 13

What is the name of sudden temporary loss of consciousness?

Answer 13

Vasovagal Syncope

“Fainting”

Question 14

What is scientific name for decreased HR and BP due to compression of the globe or traction

Answer 14

Oculocardiac

“Aschner Reflex”

Question 15

When looking through the 3 mirror, what is the most posterior structure?

Answer 15

Ciliary Body

Question 16

What is the most anterior structure?

Answer 16

Schwalbe’s line

Question 17

What structure do you document for angles?

Answer 17

Most POSTERIOR

Question 18

When evaluating the Iris, what would a convex structure look like?

Answer 18

Steep

“bowed anteriorly”

Question 19

What is the grading scale for angle pigmentation?

Answer 19

0 - None
1 - Minimal
2 - Mild
3 - Moderate
4 - Dense