Ptosis, also known as blepharoptosis, is related to congenital ptosis and marcus gunn phenomenon. An important gene associated with Ptosis is PTPN11 (Protein Tyrosine Phosphatase Non-Receptor Type 11), and among its related pathways/superpathways are Ectoderm differentiation and Fragile X syndrome. The drugs Silicon and Acetylcholine have been mentioned in the context of this disorder. Affiliated tissues include eye and breast, and related phenotypes are growth/size/body region and nervous system