Lecture 5: Illumination Techniques for Lens, Anterior Chamber, and Anterior Vitreous Flashcards Preview

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Flashcards in Lecture 5: Illumination Techniques for Lens, Anterior Chamber, and Anterior Vitreous Deck (16)
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1

What is the wide beam for?

mostly surface

2

What is the parallelepiped for?

Balance of surface and depth

3

What is the optical section for?

Mostly depth

4

______ angles allows for viewing depth without distraction from reflections from upper layers.

Wider angles (generally 30' though).

5

This technique is useful in evaluating corneal lesions such as micro cysts, "fingerprint" lines, subtle infiltrates, and KPs.

indirect illumination

6

What can allow you to see the damage of the soft tissue?

indirect light

7

Specular reflection allows you to see what (45' angle)?

endothelium

8

What are small spots you see at the back of the endothelium under specular reflection?

corneal guttata; Fusch's dystrophy; indirect

9

Anteriorly the Y suture is ____.

erect

10

Posteriorly the Y suture is _____.

inverted

11

Retro-illumination set-up
Beam?
Angle?
intensity?
magnification?

parallelepiped (4mm wide)
0 to 45-60'
medium
10-16x

12

Retro cornea

light bounce off iris; out of click

13

Retro iris

light into pupil, bounce off of retina; light in click

14

Retro lens

light into pupil, bounce off of retina; light in click

15

The ____ nucleus is the site of the Y-sutures.

fetal nucleus

16

The optically empty retrolental space is called.....

Berger's Space