An image display device includes: an interpolation phase generator that generates an interpolation phase on the basis of downsampling frame information representing a downsampling timing at which at least one frame image of the image signal is thinned, and an interpolation frame generator that generates an interpolation frame image corresponding to the interpolation phase. Through the administration of an effective amount of at least analgesic andor at least one anti-inflammatory agent at or near a target site, one can reduce, prevent or treat inflammation and pain. A cutter cuts the seal, which allows the removable cover to be removed. A radially symmetric polarizing effect is achieved in a pupil to improve image contrast. The sprayer may have a second air fitting to enable a second hose operable to convey pressurized be coupled to the sprayer body to atomize the spray fluid.