• Used With: Refractor Polarizing Filter, Binocular Cross Cylinder, Binocular Refraction, Binocular Visual Acuity, Binocular Accommodative Range, Random Dot Stereopsis, Real Contour Shapes, Horizontal and Vertical Phoria, Horizontal Associated Phoria, Horizontal Fixation Disparity, Monocular Cross Cylinder, Monocular Visual Acuity, Vertical Associated Phoria