An apparatus and method for counting the number of days that a wearer of
contact lenses has used a particular pair of disposable contact lenses.
In a preferred embodiment, a digital contact case is provided which
comprises a body having two cups for contact lens storage and two reed
switches, two caps for covering the cups, each cup having a magnet
mounted thereon that closes one of the reed switches when one of the caps
is snapped onto one of the cups. Each time both caps are snapped onto the
cups, both reed switches are closed and a signal is sent to a
microprocessor which increments by one the count of the number of days of
contact lens use on a digital display. When the count reaches the number
of days recommended by the contact lens manufacturer, the old pair of
contact lenses is thrown away, a new pair is placed in the cups and the
counter is reset by pressing a reset button.