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Sergey V. Shukhaev; Longitudinal Versus Torsional Ultrasound in Phacoemulsification (PE) for the Eyes with Fuchs' Endothelial Dystrophy. Invest. Ophthalmol. Vis. Sci. 2011;52(14):6232.
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To compare the results of longitudinal versus torsional ultrasound in PE for the eyes with Fuchs' endothelial dystrophy.
This study included 45 patients (45 eyes): group I (20 eyes) had mean endothelial cell density (ECD) in guttata area of 1450 ±113 per mm2, and group II (25 eyes) had mean ECD of 1550 ±155 per mm2. All patients underwent uncomplicated PE with use of torsional ultrasound in group I and longitudinal ultrasound (Infinity, Alcon, USA) in group II. Patients had no previous history of eye surgery or any eye disease except AMD. ECD (using Tomey EM-3000 spectral microscope, USA), coefficient of variation of cell size (CV), and cell pleomorphism were evaluated before and one year after surgery.
Mean ECD loss was slightly lower in group I (7.0%) than in it was in group II (7.7%), p>0.05. CV and cell hexagonality/pleomorphism were similar in both groups. Postoperative keratopathy subjectively was greater in group II.
Torsional ultrasound appears to be as safe as longitudinal for the corneal endothelium; however, it gives certain flexibility advantages to a surgeon in complicated cataract cases.
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