Purpose: to compare the rebound tonometer ICare�® (RT) with the Goldmann\napplanation tonometer (GAT) in cataract surgery and to assess the influence\nof central corneal thickness (CCT) on intraocular pressure (IOP) measurements.\nDesign: retrospective, comparative study. Methods: a total of 472 patients\nunderwent IOP measurement using RT (time 0 = RTa). GAT IOP\nmeasurement was performed 5 minutes later, followed by a second RT IOP\nmeasurement after other 5 minutes (RTa + 10 min = RTb). CCT was obtained\nby ultrasound pachymetry. In 106 patients IOP was measured by means of RT\nand GAT before clear corneal cataract surgery (RT1 and GAT1) and at one\nday postoperatively (RT2 and GAT2). Results: RT IOP values > 5 mmHg\nwere overestimated, while RT IOP values < 15 mmHg were underestimated.\nEvery 100 �¼m of CCT an increase of 0.97 mmHg and 0.33 mmHg was found\nfor RT and GAT respectively. The difference between RT1 and RT2, GAT1\nand GAT2, RT1 and GAT1 was not statistically significant; while the difference\nbetween RT2 and GAT2 was statistically significant (p < 0.04). The difference\nbetween RTa and RTb was not statistically significant whereas the difference\nbetween RTa and GAT and RTb and GAT was statistically significant\n(p < 0.001). Conclusion: our results showed a good agreement between\nmeasurements obtained with RT and GAT in pre and postoperative cataract\nsurgery, although a significant statistically difference was found between RT\nand GAT measurements performed postoperatively. Moreover, CCT is a parameter\nto be considered for the IOP measurement, especially for values obtained\nwith RT.
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