TUBB3 and fibrosis of extraocular muscles, congenital, 3A, with or without extraocular involvement: Congenital fibrosis of the extraocular muscles 3 (CFEOM3A) is a complex eye movement disorder with ptosis and restricted vertical and horizontal gaze with or without congenital facial palsy and non-ocular manifestations caused by a heterozygous, pathogenic missense variants in TUBB3, which encodes a beta-tubulin protein [6].