Retinoscope

The Retinoscope is a type of medical equipment. A vault physician uses a retinoscope to test the reflectivity of the retina of the eye. It is one of the tools of the physician to gauge the health of a resident.

On August 3, 2274, James, the Vault 101 vault physician, uses this tool when examining his child's health after they complain of being sick. James concluded his child is not sick and ordered them to class.