A transparent optical element having equal spherical diopter curvatures used to correct hyperopic (farsightedness) or myopic (nearsightedness) conditions of the eye.
Classification: Lenses, prisms, and mirrors, unmounted, nesoi
NSN 6145-00-907-1180
NSN 5960-01-023-1178
NSN 2925-01-353-3928
NSN 6610-00-540-8911
NSN 5965-00-653-4782
NSN 6645-01-289-0376
NSN 5915-01-645-7523
NSN 5895-00-464-2304
NSN 4140-01-197-7658
NSN 5935-01-053-4560
NSN 5965-01-200-6613
NSN 5965-00-324-2428