A sensing system and method to detect and determine magnitude and direction of ciliary body movement within an eye of a patient is disclosed. The invention comprises a permanent magnet (PM) positioned in the ciliary body, and a sensing device (SD) positioned adjacent the ciliary body and configured to detect displacement of the permanent magnet relative to the sensing device via movement of the ciliary body. The invention also comprises a data processing device (DPD) configured to determine magnitude and direction of the ciliary body movement based on the displacement of the permanent magnet detected by the sensing device.
