Bojana Danilovic has what you might call a unique worldview. Due to a rare condition, she sees everything upside down, all the time.

The 28-year-old Serbian council employee uses an upside down monitor at work and relaxes at home in front of an upside down television stacked on top of the normal one that the rest of her family watches.

"It may look incredible to other people but to me it's completely normal," Danilovic told local newspaper Blic.

"I was born that way. It's just the way I see the world."

Experts from Harvard University and the Massachusetts Institute of Technology have been consulted after local doctors were flummoxed by the extremely unusual condition.

They say she is suffering from a neurological syndrome called "spatial orientation phenomenon," Blic reports.

"They say my eyes see the images the right way up but my brain changes them," Danilovic said.

"But they don't really seem to know exactly how it happens, just that it does and where it happens in my brain.

"They told me they've seen the case histories of some people who write the way I see, but never someone quite like me."