{"product_id":"placidos-disc","title":"Placido's Disc","description":"\u003cdiv class=\"ewa-rteLine\"\u003eThe hand held Placido Disc is the easiest and most practical device for assessing corneal topography.\n\nIt comprises a circular disc with a series of alternating black and white concentric rings\nwith a central viewing lens.\n\nThe patient’s cornea is viewed through the lens with the rings facing the patient.\n\nThe rings are illuminated using a light situated behind and adjacent to the patient’s head.\n\nThe bright images of the rings visible to the observer through the central lens can be examined over an area of 4 to 6 mm in diameter.\n\nAny eccentricities in these ring images is caused by irregularities in the topography of the cornea itself.\n\n\u003cstrong\u003eCommonly purchased with:\u003c\/strong\u003e\n\nThe Hiding Heidi Low Contrast Test – SDT-384-H\n\nLea Paediatric Acuity Test Puzzle – SGR-960-L\n\nLea Grating Paddles Set – SDT-956-L\n\n\n\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796762222935,"sku":"SV-SDW-543-P","price":227.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDW-543-P.jpg?v=1781603789","url":"https:\/\/www.sussex-vision.co.uk\/products\/placidos-disc","provider":"ESP\/SV","version":"1.0","type":"link"}