  The accommodation-vergence mismatch has been considered as a cause of the
visual fatigue induced in watching 3D display. We would propose the mismatch
can be compensated by refractive power of adjustable-focus 3D glasses. From
lens optics and geometrical considerations, we also developed equations that
calculate required refractive power of the 3D glasses. The compensation we
proposed is supposed to reduce the visual fatigue of 3D display.
