Non-Variable Vertical Tranaglyph™ Slide (70 Series)
The test for vertical fusional reserve. Non-variable prismatic red/green slides provide 0.25PD to 3.0PD in 0.25PD increments. Allows for normal head tilt without eye strain or double vision. Red/green targets are silk screened on frosted vinyl. Slides measure 5.5″ x 10.5″. Can be used with Polachrome Trainer.
