{"product_id":"risley-prism-20-pd","title":"Risley Prism +\/- 20 PD","description":"\u003cdiv class=\"ewa-rteLine\"\u003e\n\u003cp class=\"MsoNormal\" style=\"margin: 0cm 0cm 0pt;\"\u003e\u003cspan style=\"font-family: Tahoma; color: black; font-size: 9pt;\"\u003eLarge aperture (23mm) rotating prisms permit more flexibility than a Phoropter. This version is +\/- 20 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 20 PD right-exo to 0 PD to 20 PD left-eso. A removable Red Maddox Filter is available to fit this prism. See product SGR-968-MF.\u003c\/span\u003e\n\n\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin: 0cm 0cm 0pt;\"\u003e\n\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796760060247,"sku":"SV-SGR-964-RP","price":951.24,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SGR-964-RP.jpg?v=1781603870","url":"https:\/\/www.sussex-vision.co.uk\/products\/risley-prism-20-pd","provider":"ESP\/SV","version":"1.0","type":"link"}