Do you recommend backup spectacles for children in myopia control contact lenses? For example, if they have a 'bad contact lens day'?
Yes, they should have a pair of spectacles certainly. If they do not have a way to see without them, they will wear them when they should not. They will wear a torn lens, they will pick a lens from off the floor and so on. It's almost a health & safety issue to have a set of reasonable backup spectacles. They will wear their contact lenses almost all the time anyway.