Virtual reality is on the cusp of becoming mainstream, but one startup in Japan is betting the technology won't really succeed unless it cracks a critical piece of the puzzle: human eyeballs.

Fove Inc. is introducing the world's first commercially available VR goggles equipped with tiny infrared cameras to follow eye movements. By tracking human irises, the gadget aims to reduce motion sickness, improve graphics performance and enhance social experiences by making virtual eye-contact possible, says Yuka Kojima, Fove's founder and chief executive officer.

"We want to be the company that figures out VR's unsolved problems," Kojima said. "The immediate goal for now is to get as many headsets into the hands of developers as possible."