FOXK2 and Parkinson disease: Furthermore, the role of compromised ILF and IFOF microstructure in Parkinson’s disease has been examined by a recent study linking the occurrence of visual hallucinations to reduced FA values in both tracts.55 Concluding, evidence exists that microstructural alterations in ILF and IFOF impairs visual information processing which contributes to the evolvement of specific clinical symptoms and can be associated with impaired behavioural measures.