But when there is a disruption and the muscles do not work together, some form of strabismus, including exotropia, may occur. Other causes may involve the nerves that transmit information from the brain to the muscles, or the part of the brain that directs eye movements.
de facto segregation-segregation (especially in schools) that happens in fact although not required by law. separatism, segregation-a social system that provides separate facilities for minority groups.
These laws were legally ended in 1964 by the Civil Rights Act of 1964. Continued practices of expecting blacks to ride in the back of buses or to step aside onto the street if not enough room was present for a white person and separate but equal facilities are instances of de facto segregation.