Optical Lens Zoom

Diopters +1,5, Diopters +2,0, Diopters +2,5, Diopters +3.0, Diopters +3.5, Diopters +4.0, Diopters -1.5, Diopters -2.0, Diopters -2.5, Diopters -3.0, Diopters -3.5, Diopters -4.0, Diopters -4.5, Diopters -5.0, Diopters -5.5, Diopters -6.0, Diopters -6.5, Diopters -7.0, Diopters -7.5, Diopters -8.0