I'll admit that I've kinda lost track of Bill Nye the Science Guy's career since he had his own show back in the 1990's, but when he turned up in this new video explaining why some people get seasick at 3-D movies today, it was just like old times ...

Nye, doing the video for a company called VSP VisionCare, is joined by an optometrist named Dr. Phelps, and together the two men break down how the 3-D process works. According to Nye and Phelps, 30% of the population has a problem with their stereoscopic vision, which basically means how their eyes work in unison. For 3-D to work, it requires a person's stereoscopic vision to be functioning properly -- and if it's not, then the viewer can wind up with headaches, dizziness, or nausea.

If you're one of this unfortunate 30%, all is not lost. Nye and the doctor offer some tips to help make the 3-D viewing experience more tolerable. One thing to try is removing the 3-D glasses for a short amount of time. Another is to close one or both eyes for 30 seconds. If those don't work, you can also try moving around the theater to change your viewing angle. Of course, those are temporary fixes. If you're having a problem viewing 3-D films, they ultimately recommend visiting your eye doctor for an examination. With more and more films coming out in 3-D, this might be money well spent for movie lovers.

As an added bonus, anyone who swings by VSP's Facebook page and posts a pic of themselves in their outdated frames will be eligible for an eyewear makeover courtesy of the company. So, if you're running around in a pair of BluBlockers and desperate to upgrade your look, you might want to participate. We promise not to laugh ... too much. Watch the clip below.