Equipment: |
Gradation of spherical lenses +: from 0.12 to 20.0 diopters; gradation of spherical lenses -: from 0.12 to 20.0 diopters; gradation of cylindrical lenses +: from 0.25 to 6.00 diopters; gradation of cylindrical lenses -: from 0.25 to 6.00 diopters; gradati
|