has material basis in autosomal dominant disease congenital fibrosis of the extraocular muscles congenital fibrosis of the extraocular muscles 1 DOID:0081015 disease_ontology MIM:135700 A congenital fibrosis of the extraocular muscles that is characterized by bilateral blepharoptosis and ophthalmoplegia with the eyes fixed in an infraducted position about 20 to 30 degrees below the horizontal midline and that has_material_basis_in heterozygous mutation in the KIF21A gene on chromosome 12q12. autosomal dominant inheritance