Eye examinations reveal prescriptions and uncover any other ocular problems. After patients choose a new set of lenses, the in-house technicians get to work crafting them in the shop's own lab rather than sending them off to be made during a summer camp's arts and crafts day. Sundry designer frames border eyes in looks from Giorgio Armani and Marc Jacobs to Nike and Harley Davidson, and there is usually a trio of technicians in the shop, enabling multiple clients to summon help with a single pigeon call. Doctors can also help patients select the right contact lenses from brands such as Acuvue and Bausch & Lomb.