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Comparison of Mini-Flared 45° Kelman and Mini-Flared OZil 12 Tips in Resident and Attending Torsional Phaco Cases

Comparison of Mini-Flared 45° Kelman and Mini-Flared OZil 12 Tips in Resident and Attending Torsional Phaco Cases. Sherleen Chen, M.D. and Roberto Pineda II, M.D. Massachusetts Eye and Ear Infirmary Harvard Medical School Boston, Massachusetts. Purpose. Both have 45° bevel at tip.

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Comparison of Mini-Flared 45° Kelman and Mini-Flared OZil 12 Tips in Resident and Attending Torsional Phaco Cases

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  1. Comparison of Mini-Flared 45° Kelman and Mini-Flared OZil 12 Tips in Resident and Attending Torsional Phaco Cases Sherleen Chen, M.D. and Roberto Pineda II, M.D. Massachusetts Eye and Ear Infirmary Harvard Medical School Boston, Massachusetts

  2. Purpose Both have 45° bevel at tip • Background • Torsional phaco more effective with angulation of Kelman tip than with straight phaco tip • New OZil 12 developed for surgeons less comfortable with the standard 20° angulation of the Kelman tip • Goal • Compare safety and efficiency of the Mini-flared OZil 12 tip to the Mini-flared 45º Kelman in resident and attending torsional phaco cases Mini-Flared OZil 12 12° shaft angulation Mini-Flared 45° Kelman 20° shaft angulation Straight phaco tip = 0° shaft angulation

  3. Methods • 48 consecutive cases in 42 patients using torsional phaco performed by residents and attendings • Cases randomly assigned to use of Mini-flared 45° Kelman tip or Mini-flared OZil 12 tip • Data recorded • Complications • Nuclear Density determined pre-operatively • Calculated as LOCS III NC grade + LOCS III NO grade • Ex. NC2NO2C2 = Nuclear Density of 4 • Metrics • Cumulative dispersed energy (CDE) • Total ultrasound time (sec) • Aspiration time (sec)

  4. Results-Safety • No phaco complications encountered • Posterior capsular rent occurred during cortical removal with I/A on one resident case

  5. Results-Efficacy No statistically significant differences

  6. Results-Efficacy No statistically significant differences

  7. Results-Efficacy No statistically significant differences

  8. Conclusions • No statistically significant difference between tips in safety or efficacy • Sample size may be too small to achieve statistical signficance • Both tips worked well • For teaching or early learning curve in torsional phaco, we would suggest starting with the OZil 12 for easier visualization of the port, since efficiency of both tips appears to be similar

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