Eye mask system

An eye mask system for providing respiratory pressure therapy to a user for treatment of sleep disordered breathing, the eye mask system comprising:

• an eye mask configured to cover the user's eyes in use and comprising:
• a connection port configured to fluidly connect to and receive a positive pressurised flow of air from an air circuit at a therapeutic pressure for breathing by the user during use, the connection port provided to or fluidly connected to the eye mask;
• or
• a flow generator configured to generate a positive pressurised flow of air at a therapeutic pressure for breathing by the user during use,
• wherein the eye mask further comprises:
• a plenum chamber at least partially forming an interior space pressurisable to said therapeutic pressure, said plenum chamber sized and structured to receive the flow of air at said therapeutic pressure,
• a seal-forming structure constructed and arranged to form a seal with a region of the user's face surrounding an entrance to the user's airways, said seal-forming structure having a hole therein such that the flow of air at said therapeutic pressure is delivered to at least an entrance to the user's nares, the seal-forming structure constructed and arranged to maintain said therapeutic pressure in the interior space throughout the user's respiratory cycle in use;
• and
• a vent to allow a continuous flow of gases exhaled by the user from the interior space to ambient, said vent being sized and shaped to maintain said therapeutic pressure in the interior space in use,
• wherein the eye mask system is configured to operate in at least two modes when worn by the user, the at least two modes including:
• a non-treatment mode in which respiratory pressure therapy is not provided to the user, and
• a treatment mode in which respiratory pressure therapy is provided to the user for treatment of sleep disordered breathing.