Potential vision glasses are used to view a reading chart of the Retinal Acuity Meter (RAM) or the C or E charts of the DiagnosticGame App. Includes Carrier Frames, one Panoramic Pinhole-Lens Clip-on, and Occluder Clip-on. Also available in solid disc pinhole rather than Panoramic Pinhole. For use with the DiagnosticGame App, the Panoramic Pinhole is recommended.