External ophthalmoplegia with rib and vertebral anomalies (EORVA) is characterized by congenital nonprogressive external ophthalmoplegia, ptosis, scoliosis, torticollis, vertebral, and rib anomalies, caused by homozygous mutations in the myogenic factor 5 gene (<i>MYF5</i>) located on chromosome 12q21.31. This evidence concerns the gene MYF5 and ptosis.