Plastic Frames in Adult and Child sizes with Red/Bluegreen filters whereby the red filter is placed before the right eye and the blue filter before the left eye.
 
Not possible to change them from place but excellent for accomplishing fusion exercises.
 
Thanks to the excellent filter quality, appropriate for vis-à-vis technique like with polaroid glasses.
 
Manufactured by OPTOMA TT ERS©.
 
Adult frames are black.
Child frames are orange.