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.
Proper noun. A specific period in United States history during which laws requiring racial segregation were struck down and the practice was deterred, beginning in the United States military during World War II and occurring in society in general from the mid-1950s. desegregation - Legal Definition.