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polarized exercise therapy to improve the efficiency and width of eye alignment ability by increasing the range of binocular vision, while increasing vision reflexes and decreasing eye strain - this exercise can help eliminate suppression (turning one eye off) and train convergence (bringing the eyes in) and divergence (bringing the eyes out) - stereopsis depth on Vortex image range of 6, 100 seconds of arc - letters orientation to the Vortex image above, below and even with the image at +/- 600 seconds of arc - total accommodation range of 40 diopters - with Polarized Viewers - letters provide orientation to the vortex image above, below and even with the image at +/-600 seconds of arc. - this Vortex with central targets is often recommended for esophoria and esotropia - Vortex provides 16 diopter range for base-in (divergence) training and 24 diopter range for base-out (convergence) training for a total accommodation range of 40 diopters