The Peek eye exam certainly changes the way we all look at those letters on a chart. Offering a way to get eyecare to developing countries without much in the way of preventative medicine--or in some cases, any medicine--British ophthalmologists have created a smartphone app that also operates with a camera and 3D printed adaptor for use in the field. The app, accentuated with 3D printed technology by way of a camera and 3D printed adapter, is very user-friendly and transforms the traditional visual exam from the patient looking at a chart to that of a mobile test featuring a shrinking visual. Further details about this app and 3D printed adapter for smartphones can be found in the following article: http://3dprint.com/69937/peek-smart-app-eye-exam/