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S. Dupont-Monod, A. Chassignol, A. Grise, A. Labbé, C. Baudouin; Thermal and Architectural Analysis of Clear Corneal Incision for Phacoemulsification. Invest. Ophthalmol. Vis. Sci. 2008;49(13):381.
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© ARVO (1962-2015); The Authors (2016-present)
To analyze the in vivo architecture of clear corneal incisions (CCIs) and surgical incision temperature for different phacoemulsification (PKE) techniques.
35 CCIs of PKE (19 coaxial 2.2 mm, six coaxial 2.75 mm, and 10 bimanual 1.3 mm) were evaluated with anterior segment OCT. Temperature of 28 CCIs was recorded during PKE (14 coaxial 2.2 mm, height coaxial 2.75 mm, and six bimanual 1.3 mm) using infrared thermometer after corneal emissivity determination.
All studied surgical techniques induced minor anatomic changes after CCIs at day one. Increase of pachymetry at the incision level was higher (p=0.001) in the bimanual 1.3 mm group (1143 ±140 µm) than in the coaxial 2.2 mm incision group (1012 ± 101 µm). Corneal emissivity was 0.90. No thermal difference within the three groups during PKE mode one (average temperature was 28.3 °C, p=0.38) and in PKE mode two (average temperature was 28.2 °C, p=0.28) was found. Bimanual 1.3 mm CCIs’s temperature was lower (25.0 °C) than in the two other groups (26.5 °C in the 2.2 mm group and 27.0°C in the 2.75 °C group) during irrigation-aspiration mode (p=0.04).
New techniques of micro incision, either bimanual or coaxial, do not induce major wound alteration or temperature increase.
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