There was no statistically significant difference in strabismus prevalence between the major genetic subtypes (Deletion: 41.9 %, UPD: 43.6 %, p = 0.66), nor by GH use (Never on GH: 41.2 %, GH initiated before 2 years of age: 47.4 %, GH initiated after 2 years of age: 40.3 %, p = 0.24). The gene discussed is GH1; the disease is Strabismus.