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 4140-01-634-0330
NSN 5835-01-053-1236
NSN 5925-01-625-4428
NSN 2925-01-372-9455
NSN 5975-00-400-4398
NSN 5935-01-645-2952
NSN 5835-00-933-9609
NSN 5910-01-440-6505
NSN 6685-00-969-8592
NSN 5835-01-406-7633
NSN 5950-00-355-4034
NSN 5920-00-983-8630