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 5985-01-354-1762
NSN 5999-01-633-0365
NSN 5855-01-651-3794
NSN 6650-01-649-0228
NSN 6135-01-056-4609
NSN 5985-01-376-2659
NSN 5935-00-859-2842
NSN 6130-01-366-5008
NSN 6610-00-227-8846
NSN 5835-01-493-1826
NSN 5996-00-444-2541
NSN 6320-01-541-7585