How to Avoid Stereo Fatigue in 3D Features?

Dear all,

I love watching 3D films, but I also find that the whole stereo effect starts to fade, about 30-45 min. into the film. At some point, I have to blink a lot, and remind myself to look for the 3D, in order for the effect to wake up in me again. Then, it starts to fade again.

Now, as I'm trying to plan the edit and depth budget for my own 3D feature, I am keenly aware of this fatigue effect, and want to find ways to pace the stereo, and periodically reinvigorate the audience.

Thankfully, since my documentary doesn't have to stick to any naturalistic rules of continuity, all possible techniques are on the table. I'd love to hear y'all's thoughts about ways of dealing with stereo fatigue, and how to keep the audience's eyes fresh.

Thanks,

Matt Faw