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Melissa Wong, Anita Shukla, Wuqaas Munir; Phacoemulsification Parameters and Measures of Corneal Edema. Invest. Ophthalmol. Vis. Sci. 2013;54(15):1836. doi: https://doi.org/.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate the effect of different parameters of phacoemulsification on corneal edema, as determined by central corneal volume.
Fourteen eyes of eleven patients undergoing cataract surgery were enrolled in this prospective study. Central 7mm corneal volume (CCV) was measured preoperatively, 1 day (POD1) and 1 month (POM1) postoperatively using Scheimpflug camera. Intraoperative phacoemulsification time (PT), torsional time (TT), estimated fluid used (EFU), and cumulative dissipated energy (CDE) were recorded.
At POD1, there is a positive correlation between change in 7mm CCV and CDE of 0.29 (p<0.01). There is a positive correlation (r) of 0.32 (p<0.01) between change in 7mm CCV and TT. While there is a strong positive correlation of 0.76 (p<0.01) between change in 7mm CCV on POD1 and EFU, this correlation is diminished (r=0.18, p<0.01) at POM1. There is also a strong positive correlation of 0.61 (p<0.01) between change in 7mm CCV on POD1 and PT, however this correlation is diminished (r=0.15, p<0.01) at POM1.
Central corneal volume is a corneal parameter that is indicative of postoperative corneal edema. There were small positive correlations between change in 7mm CCV and CDE and also TT at POD1. The strong positive correlations between change in 7mm CCV and EFU and PT at POD1 diminish by POM1.
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