MS. KEERTHANA MURALIDHARAN

Dr. SWAPNA NAIR, Dr.Ashwin Mohan

Abstract

Aim:To study change in surface temperatures(temp) of cornea during torsional and longitudinal phaco and to assess its relation to intraoperative parameters.Method:89eyes undergoing cataract surgery divided into 2-torsional and longitudinal.Calibrated thermal camera kept at uniform distance from eyes for video recordings of surface temp during phaco.Type of tip,site of temp rise,time for temp rise, energy dissipated and metrics recorded and data analysed.Result:Temp(in0C)at surface was 34-torsional and 33.33 -longitudinal(P=0.584),32.6 -balanced tip and 34.3-Kelman (P=0.032) and increased with grade of cataract(P=0.154).Time taken to reach max temp-96.66s in torsional and 73.78s in longitudinal(P=0.001).Limbal rise of temp was 40% in torsional and 4% in longitudinal(P=0.001). Conclusion:Temp were raised significantly in torsional phaco at limbus while tip temp were comparable.Time taken to reach maximum temp significantly differs in both.Use of balanced tip decreases max temp reached

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