01:57 AM EDT 11/26/2014

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Laura Ingalls Wilder

The Real Cause of Little House's Mary Ingalls's Blindness Finally Revealed

Little House on the Prairie: Cause of Mary Ingalls's Blindness Revealed

Originally posted 02/05/2013 09:45AM

Think you know everything about Laura Ingalls Wilder's Little House on the Prairie series?

Think again.

Readers of the beloved series will remember how Wilder's older sister Mary went blind as a result of scarlet fever. But a new study published in Pediatrics, the Official Journal of the American Academy of Pediatrics, has revealed the cause of Mary's blindness was likely meningoencephalitis – a disease similar to meningitis.

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