If you sign up for eye test reminders and guides, we store your email address, your strength finder answers and the time you signed up, and use them only to send reminders and guides. Every email has an unsubscribe link. We keep it for 24 months, or until you ask us to delete it by emailing hello@sight.direct. We do not sell or share your details. The strength finder itself runs in your browser and sends nothing unless you submit your email. This site does not set tracking cookies. You can complain to the ICO (ico.org.uk).