An optical correcting system which enables a shooter to better see both the sights of his firearm and the target includes a series of lenses of sequentially incremental one quarter diopter optical power, a chart which facilitates selection of the appropriate lens, and a headband assembly which secures the selected lens in a manner to fit over the shooter’s aiming eye. The wipe is particularly useful for treatment of disorders of the eyelid or eyelid margin such as meibomian gland dysfunction. The shell design includes first and second bulbous end portions, which can each be adapted to receive a respective end of a transduction driver.