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Nilufer Yesilirmak, Sotiria Palioura, Vasilios Diakonis, Daniel Waren, Sonia H. Yoo, Kendall Donaldson; Accuracy of Intraoperative Wavefront Aberrometer for Toric IOL in Post Refractive Eyes Undergoing Cataract Surgery. Invest. Ophthalmol. Vis. Sci. 2015;56(7 ):2968.
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© ARVO (1962-2015); The Authors (2016-present)
To compare preoperative toric intraocular lens (IOL) calculater with intraoperative wavefront aberrometry and evaluate the accuracy of intraoperative wavefront aberrometry in post-refractive eyes that underwent cataract surgery with toric IOL.
Ten post-refractive eyes were implanted with toric IOLs by using intraoperative wavefront aberrometry (ORA System, WaveTec Vision) to select the lens power and to guide the final lens orientation. Preoperative IOL power was calculated by IOL Master and toric planner and its prediction error compared with ORA prediction error. Predicted and measured residual refractive error was used to determine the accuracy of ORA System.
Mean preoperative keratometric astigmatism was 2.05 ± 0.63 D (range 1.15 to 3.33 D). Mean postop manifest astigmatism was 0.91 ± 0.62 D (range 0.00 to 1.75 D). The mean ORA prediction error (MAVPE) was 0.35 ± 0.24 D, compared to a mean prediction error of 0.97 ± 0.72 for the calculated preoperative lens choice (p < 0.01). The prediction error was ≤ 0.25 D in 50% of eyes with ORA, compared to 20% of eyes with the preoperative lens choice. The prediction error was ≤ 0.75 D in 100% of eyes with ORA, compared to 40% of eyes with the preoperative lens choice.
The ORA System is a useful device for selecting of accurate toric IOL power and guiding final lens orientation in post-refractive eyes.
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