In order to characterize the optical characteristics of a device, a source of light having a variable frequency with a polarization state which varies linearly with frequency is provided as an input to the device under test. An exemplary embodiment of the device contains a main housing having an interior and exterior with a top opening sized to surround the eye and a bottom opening sized to accept the tip of an eye drop vial. Generally, the operating system is responsible for scheduling various threads of execution among the available processors in a multiprocessor system.