PS:  I would suggest checking the horizontal alignment of the eyeballs in a head-on shot. Usually a small x-axis adjustment to each eye (not always the same amount each side) is enough to fix the problem, although sometimes the eyeballs need to be moved forward a fraction too (and I think these probably do).

Incorrect translation is almost always the cause of the eyes appearing to the viewer to point in different directions when rotated sideways as a pair (or individually by the same angle). It can also be caused by incorrect morphing of the eye position, resulting in the eyeballs no longer rotating about their proper axis (see lesbentley's recent post on this).

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)