Two Swiss companies, Vivior and SwissLens, have agreed to collaborate in the field of personalized multifocal soft contact lenses for presbyopia correction. The aim is to optimize the design of the lenses by using the data generated by Vivior's visual behavior monitor. Vivior is a digital health start-up founded in 2017 that has developed a wearable device – the Vivior Monitor – to measure visual behavior prior to vision correction interventions. SwissLens is a contact lens manufacturer based in Prilly, near Lausanne.