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Risley Prism +/- 30 PD
Product Code: SGR-966-RP
Price: £947.29
Qty:
Large aperture (23mm) rotating prisms permit more flexibility than a Phoropter. This version is +/- 30 PD and has a convenient handle. The prism is controlled using a knurled rotating knob. The accurately calibrated dial shows prism diopter and rotates through 30 PD right-exo to 0 PD to 30 PD left-eso. A removable Red Maddox Filter is available to fit this prism. See product SGR-968-MF.
