Inclusion Criteria:  Have a diagnosis of mastocytosis Male or female, 18 years of age and over Ability to understand and provide written informed consent.  Exclusion Criteria:  Disorders that do not allow good visualization of the posterior pole (cataract, intravitreal hemorrhage) Patients with another ocular pathology that may bias the results (corneal dystrophy, dysthyroid orbitopathy, retinal pathologies) History of refractive surgery