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 5920-01-384-7958
NSN 6610-01-633-8931
NSN 6645-01-422-1374
NSN 6150-01-535-2328
NSN 2925-01-424-0235
NSN 5905-00-294-9445
NSN 5935-01-442-6483
NSN 5990-01-452-0911
NSN 5910-00-802-8574
NSN 5835-00-946-2656
NSN 5925-01-568-2807
NSN 6320-00-925-0558