UV light used during teeth whitening procedure - could this have damaged my eyes?

Good day, I have 2 questions regarding blue UV light used during my teeth whitening procedure: *I accidentally looked at the blue UV light for an instant through the gap in the glasses I was wearing as the provider put the device in my mouth - could this have damaged my eyes? *can the UV cause cancer in my mouth/lips? I had three 15 minute sessions during the procedure. Thank you