The Department of Defense (DoD) is seeking proposals for the development of a polynomial-curved bespoke prescription lens for respiratory protection. The objective is to create a lens that can provide visual correction on a curved surface, such as the M50 respirator lens, with varied prescription strength for each eye. Currently, vision correction is achieved through an internal vision correction assembly, which negatively impacts compatibility with external sighting systems. The proposed lens should eliminate the need for this assembly and be made-to-order with specified diopter strengths available on either half of the lens. It should also maintain the shape and size of the M50 lens and have threat agent permeation resistance characteristics required by NIOSH. The project will involve investigating lens solutions, developing prototypes, and refining the material to create a full respirator lens. The technology should be suitable for military combat applications and may have potential applications in industrial, pharmaceutical, healthcare, international, and other commercial respiratory protection uses.