The Exploratory Handheld Optical Coherence Tomography Study in Wilson's Disease

Inclusion Criteria: * Wilson patients with Kayser Fleischer rings on slit lamp examination and 5 patients without Kayser Fleischer rings on slit lamp examination Exclusion Criteria: * Those who do not have a confirmed diagnosis of Wilson's disease and no previous formal slit lamp examination will be excluded from recruitment. * The investigators will also exclude those patients with known corneal disease, history of intraocular disease, haematological disease, pregnancy, and use of topical or intraocular medication.