With this study the investigator wants measure the individual cyclofusion competence from healthy subjects and patients suffering from Strabismus with a only binocularly visible threedimensional Landolt-C stimulus. For this the participant has to look at a 3-D monitor with shutter glasses. The participant is sitting in 2 meter distance in front of the monitor. On the monitor appears the Landolt-C stimulus as a dynamic Random-Dot Stimulus. As long as the participant can fuse the stimulus he will be able to see the Landolt C-ring threedimensional. The participant is then ask to tell in which direction the notch of the Landolt-C ring points out. Once a critical degree of cyclotorsion is reached the participant will no longer be able to see the Landolt C ring and the individual cyclofusion competence is reached.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
50
Measurement of the maximal cyclofusion competence with a dynamic 3-D Random-Dot Landolt-C stimulus
In- and excyclofusion competence in healthy individuals. Change in In- and excyclofusion competence in patients who need a strabismus surgery before and 6 month after surgery.
The maximum in- and maximum excyclofusion competence will be measured with the described test set-up. The results will be documented in degree.
Time frame: Once in healthy individuals. Before and 6 month after a (independent from the study) performed strabismus surgery.
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