A method of detecting eye convergence, the method comprising: detecting a first inward gaze with first gaze detection circuitry included in a first contact lens disposed on a first eye; detecting an eye blink of the first eye with first blink detection circuitry included in the first contact lens, if the eye blink of the first eye is detected by the first blink detection circuitry within a first pre-determined time period following the detecting of the first inward gaze, transmitting a first inward gaze signal from the first contact lens to a second contact lens disposed on a second eye and listening for a second inward gaze signal; detecting a second inward gaze with second gaze detection circuitry included in the second contact lens disposed on the second eye; detecting an eye blink of the second eye with second blink detection circuitry included in the second contact lens; if the eye blink of the second eye is detected by the second blink detection circuitry within the first pre-determined time period following the detecting of the second inward gaze, transmitting a second inward gaze signal from the second contact lens to the first contact lens and listening for the first inward gaze signal; receiving with first reception circuitry, at the first contact lens, the second inward gaze signal; and adjusting an optical power for the first eye if the second inward gaze signal is received within a second pre-determined time period following detection of the eye blink of the first eye; receiving with second reception circuitry, at the second contact lens, the first inward gaze signal; and adjusting an optical power for the second eye when the first inward gaze signal is received within the second pre-determined time period following the detection of the eye blink of the second eye. detecting a first inward gaze with first gaze detection circuitry included in a first contact lens disposed on a first eye; detecting an eye blink of the first eye with first blink detection circuitry included in the first contact lens, if the eye blink of the first eye is detected by the first blink detection circuitry within a first pre-determined time period following the detecting of the first inward gaze, transmitting a first inward gaze signal from the first contact lens to a second contact lens disposed on a second eye and listening for a second inward gaze signal; detecting a second inward gaze with second gaze detection circuitry included in the second contact lens disposed on the second eye; detecting an eye blink of the second eye with second blink detection circuitry included in the second contact lens; if the eye blink of the second eye is detected by the second blink detection circuitry within the first pre-determined time period following the detecting of the second inward gaze, transmitting a second inward gaze signal from the second contact lens to the first contact lens and listening for the first inward gaze signal; receiving with first reception circuitry, at the first contact lens, the second inward gaze signal; and adjusting an optical power for the first eye if the second inward gaze signal is received within a second pre-determined time period following detection of the eye blink of the first eye; receiving with second reception circuitry, at the second contact lens, the first inward gaze signal; and adjusting an optical power for the second eye when the first inward gaze signal is received within the second pre-determined time period following the detection of the eye blink of the second eye. <EOS>