A device for treating a mammalian eye having an eyelid (12, 14), comprising: a shield formed of a plate positionable proximate an inner surface of an eyelid, the shield including an energy-reflecting material that is adapted to reflect light energy; an energy transducer having a device that is adapted to emit light energy, the energy transducer positionable outside of the eyelid when the shield is positioned proximate the inner surface of the eyelid, wherein the energy transducer is configured to provide light energy toward the energy-reflecting material at one or more wavelengths; the device being characterised by further comprising: an energy transmission surface adapted to direct energy generated by the energy transducer module toward the eyelid and positioned in a spaced relationship with the shield a housing, wherein the shield, the energy transducer, and the energy transmission surface are mechanically coupled to the housing; an actuator coupled to the housing, wherein actuation of the actuator causes relative movement between the energy transmission surface and the shield so as to modify the spaced relationship; wherein when the eyelid is positioned between the energy transducer and the shield, the light energy from the energy transducer passes through the eyelid and reflects off the shield. a shield formed of a plate positionable proximate an inner surface of an eyelid, the shield including an energy-reflecting material that is adapted to reflect light energy; an energy transducer having a device that is adapted to emit light energy, the energy transducer positionable outside of the eyelid when the shield is positioned proximate the inner surface of the eyelid, wherein the energy transducer is configured to provide light energy toward the energy-reflecting material at one or more wavelengths; the device being characterised by further comprising: an energy transmission surface adapted to direct energy generated by the energy transducer module toward the eyelid and positioned in a spaced relationship with the shield a housing, wherein the shield, the energy transducer, and the energy transmission surface are mechanically coupled to the housing; an actuator coupled to the housing, wherein actuation of the actuator causes relative movement between the energy transmission surface and the shield so as to modify the spaced relationship; wherein when the eyelid is positioned between the energy transducer and the shield, the light energy from the energy transducer passes through the eyelid and reflects off the shield. an energy transmission surface adapted to direct energy generated by the energy transducer module toward the eyelid and positioned in a spaced relationship with the shield a housing, wherein the shield, the energy transducer, and the energy transmission surface are mechanically coupled to the housing; an actuator coupled to the housing, wherein actuation of the actuator causes relative movement between the energy transmission surface and the shield so as to modify the spaced relationship; wherein when the eyelid is positioned between the energy transducer and the shield, the light energy from the energy transducer passes through the eyelid and reflects off the shield.