A device for accommodation training includes a primary light and a sensor supported by a housing and configured to be worn atop the head of the user to capture light reflected by the retina. One or more alignment lights may be provided, along with mounts for adjusting the positioning of the lights and sensor. A feedback signal such as an audible tone is produced as a function of the detected light, providing confirmation to the user that a desired control over the ciliary muscle has been achieved.
