And... the strength... if the lenses are off, they can make your eyes worse... either direction... if it's your first pair... they might hurt your nose a bit and be generally annoying... after a bit, (depending on what they are) they can become a second skin
(( mostly known as a robotic bone bag that takes care of Charlet and ruslan kind. Of like a robotic butler. Who can also be a hologram. Like if you guys need me to I will change his name