Methods for Eye Movement Observation Flashcards
What are examples of direct observation?
physiological H aka versions, monocular ductions, developmental protocol
What are clinical performance tests?
King-Devick (NYSOA-KD), developmental eye movement test, groffman visual tracing, readalyzer (infrared)
T/F “We do not test pursuits and saccades separately”
true
How should the doctor move the wolff wand for observing eye movements?
in a pattern that moves through the developmental stages of ocular motilities or tracking until the current level of development is identified
What additional observations can be made during motility testing?
head/body movement, motor overflow, squinting, inability to stay still
Name the stages of development and type of tracking
early- no relation to target, whole body, upper body
middle- head and eyes
late- eyes only
Name the stages of development and pattern
early- horizontal, vertical, diagonal
middle- circles, z-axis (line of sight), start stop
late- speed change
Name the stages of development and quality
early- poor (with #), poor, fair (75%)
middle- good
late- excellent
At what age should a person have learned to move the eyes independent of the rest of the body?
5.5-6.5 years old
What should have happened developmentally by 5.5-6.5 years old?
the person should have learned to use the eyes free of the rest of the body
Why must one be able to move the eyes independent of the body?
affects the ability to know where you are in space, where an object is in space, or sustain visual attention
What is electro-oculography?
use of electrodes to depict position of eye and can be used to determine certain retinal diseases
What is the charge of the eye?
front is + and back is -
When the eyes moved 30 degrees to the right ___
there was a positive charge from the cornea
When the eyes moved 15 degrees to the left ____
there was a negative charge from the retina
