Post-market Clinical Follow-up Study of Alcon TOTAL30® Contact Lenses (Lehfilcon A)

Key Inclusion Criteria: * Wearers of lehfilcon A (sphere or toric) contact lenses of the same design in both eyes who have already begun use of the lens type and have purchased at least 3-month supply of lenses at the baseline timepoint; * Best corrected spectacle visual acuity (VA) 20/25 or better at baseline; * Healthy, non-diseased eyes; * Other protocol-specified inclusion criteria may apply. Key Exclusion Criteria, as determined or known by the Investigator: * Any ocular disease or condition that would contraindicate contact lens wear present at baseline; * The use of systemic or ocular medications that would contraindicate contact lens wear at baseline; * Participation in a contact lens or contact lens care product clinical trial during the period of the retrospective chart collection or during prospective study participation; * Other protocol-specified exclusion criteria may apply.