1. A contact lens, comprising: a substrate; a circuit comprising: a glucose sensor configured to sense glucose features associated with a wearer of the contact lens, wherein the sensor is configured to be powered by a portable radio frequency (RF) device external to the contact lens; a microprocessor configured to determine glucose information based, at least in part, on the sensed glucose features; a memory configured to store the glucose information; an analysis component configured to generate statistical information based, at least, on sensed glucose features, wherein the statistical information comprises information associated with a recommendation; and a communication component configured to transmit, to the RF device, at least, one of: glucose information or the recommendation.