These Jackson Cross Cylinders are used to determine the orientation and power of the astigmatism correction and the axis. The lenses are 35mm with axis markings and a handle that is 70mm long.
Jackson Cross Cylinder 0.25
SKU : 484050-1
These Jackson Cross Cylinders are used to determine the orientation and power of the astigmatism correction and the axis. The lenses are 35mm with axis markings and a handle that is 70mm long.
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