Name______________________________
QUIZ # 1
VS 117: Oculomotor Functions and Neurology
Spring 1997
1. (4 points) Define Angle Lambda
2. (4 points) During the Hirschberg test you observe the following:
Angle Lambda right eye = +0.5: left eye = +2.0.
Describe the direction (eso or exo) and magnitude of the left eye turn.
3. (4 points) List the reflecting surfaces for the 4 Purkinje images
4. (2 points) What entoptic phenomenon results from the yellow macular pigment?
5. (4 points) List or give examples of 4 different ways to vary the optical power (accommodation) of an eye (dont use a pinhole).
6. ( 4 points) define isoindical surfaces
7. (2 points) List two types of gaze stabilizing eye movements