The present application relates generally to an ophthalmic device e.g. a contact lens (100) or intraocular lens capable of monitoring neural frequencies and correlating the measured frequencies them to specific brain activity/functions. In some embodiments profiles specific to the user of the ophthalmic device can be pre-programmed to tailor a brain activity/function profiles according to a user. Based on the determined brain activity/function from the correlation a signal may be generated to provide feedback (440) to the user. The signal may be transmitted to the user in one or more form. For example the signal may be outputted to a wireless device in wireless communication with the ophthalmic device and/or through an audible signal projected by an acoustic element and/or a visual signal projected using a photon emitter both which may be included in the ophthalmic device
