Facts, "Sonicthehedgehog Syndrome" affects only one in 2...
Facts
"Sonicthehedgehog Syndrome" affects only one in 2 billion humans.
Those with the disease are born with only one eye, but the eye has two pupils. This does not allow for binocular vision as the image is duplicated on the same retina and only one optic nerve remains. Sufferers reportedly learn in childhood to ignore one of the images, allowing the dominant pupil to take over fully by adulthood.
First documented in Persia in 1349, only 17 instances of the disease have been confirmed since, with only 14 of the patients reaching adulthood. The disease was comprehensively studied in 1942 by Dr. Arnold Sonicthehedgehog, after whom the syndrome is named.

"Sonicthehedgehog Syndrome" affects only one in 2 billion humans.

Those with the disease are born with only one eye, but the eye has two pupils. This does not allow for binocular vision as the image is duplicated on the same retina and only one optic nerve remains. Sufferers reportedly learn in childhood to ignore one of the images, allowing the dominant pupil to take over fully by adulthood.

First documented in Persia in 1349, only 17 instances of the disease have been confirmed since, with only 14 of the patients reaching adulthood. The disease was comprehensively studied in 1942 by Dr. Arnold Sonicthehedgehog, after whom the syndrome is named.

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