Conjoined twins see through each other's eyes

 A set of conjoined twins in British Columbia, Canada, have such a unique bond they can see through each other's eyes.

Their pediatric neurosurgeon, Dr. Doug Cochrane, said they share not only connected blood vessels but a connected thalamus as well. He said there's a bridge of neural tissue in the twins that makes them so unique.

Thaindian.com said the thalamus is the part of the brain that sends physical sensations and motor functions to the cerebral cortex. That's what helps them hear each other's thoughts and see through each other's eyes.

Mother Felicia Simms told The Daily Mail that she realized their ability when they saw them playing. One would reach over and grab something from the other's side and know where it is without being able to see it.

“It's absolutely awesome to watch them sometimes because there's no way she can see the toy she is reaching for and it's just incredible,” said Simms, who said they also share each other's emotions such as when one is hurt or disciplined.

Simms first realized her daughters' condition when she was pregnant and it showed up on an ultrasound. She said it was surreal, “like I was living in a dream and about to wake up.”

The Daily Mail said only eight such cases have been documented and only three have survived birth.

A National Geographic Channel episode about the twins will air at 11 a.m. Dec. 16.