Prismatic Spectacles with a spring hinge without nose pads.
This work on focal distance , as the magnification gets stronger you have to bring material closer to your face.
This is a non-returnable item.
+4D is about 2X magnification
+5D is about 2.25X magnification
+6D is about 2.5X Magnification
+7D is about 2.75X magnification
+8D is about 3X magnification
+10D is about 3.5X magnification
+14D is about 4X magnification
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