TY - JOUR
T1 - A Fluidics Comparison of Alcon Infiniti, Bausch & Lomb Stellaris, and Advanced Medical Optics Signature Phacoemulsification Machines
AU - Georgescu, Dan
AU - Kuo, Annie F.
AU - Kinard, Krista I.
AU - Olson, Randall J.
N1 - Funding Information:
This study was supported by an internal departmental funds and an unrestricted grant from Research to Prevent Blindness, Inc, New York, New York. Dr Olson serves as a consultant to Advanced Medical Optics. Involved in design of study (D.G., R.J.O.); conduct of study (D.G., A.F.K., K.I.K., R.J.O.); collection and management of the data (D.G., A.F.K., K.I.K.); analysis and interpretation of data and preparation of the manuscript (R.J.O.); and review and approval of the manuscript (D.G., A.F.K., K.I.K., R.J.O.). This study did not include living human subjects, and so Institutional Review Board approval was not obtained.
PY - 2008/6
Y1 - 2008/6
N2 - Purpose: To compare three phacoemulsification machines for measurement accuracy and postocclusion surge (POS) in human cadaver eyes. Design: In vitro comparisons of machine accuracy and POS. Methods: Tip vacuum and flow were compared with machine indicated vacuum and flow. All machines were placed in two human cadaver eyes and POS was determined. Results: Vacuum (% of actual) was 101.9% ± 1.7% for Infiniti (Alcon, Fort Worth, Texas, USA), 93.2% ± 3.9% for Stellaris (Bausch & Lomb, Rochester, New York, USA), and 107.8% ± 4.6% for Signature (Advanced Medical Optics, Santa, Ana, California, USA; P < .0001). At 60 ml/minute flow, actual flow and unoccluded flow vacuum (UFV) was 55.8 ± 0.4 ml/minute and 197.7 ± 0.7 mm Hg for Infiniti, 53.5 ± 0.0 ml/minute and 179.8 ± 0.9 mm Hg for Stellaris, and 58.5 ± 0.0 ml/minute and 115.1 ± 2.3 mm Hg for Signature (P < .0001). POS in an 32-year-old eye was 0.33 ± 0.05 mm for Infiniti, 0.16 ± 0.06 mm for Stellaris, and 0.13 ± 0.04 mm for Signature at 550 mm Hg, 60 cm bottle height, 45 ml/minute flow with 19-gauge tips (P < .0001 for Infiniti vs Stellaris and Signature). POS in an 81-year-old eye was 1.51 ± 0.22 mm for Infiniti, 0.83 ± 0.06 mm for Stellaris, 0.67 ± 0.01 mm for Signature at 400 mm Hg vacuum, 70 cm bottle height, 40 ml/minute flow with 19-gauge tips (P < .0001). Conclusions: Machine-indicated accuracy, POS, and UFV were statistically significantly different. Signature had the lowest POS and vacuum to maintain flow. Regarding POS, Stellaris was close to Signature; regarding vacuum to maintain flow, Infiniti and Stellaris were similar. Minimizing POS and vacuum to maintain flow potentially are important in avoiding ocular damage and surgical complications.
AB - Purpose: To compare three phacoemulsification machines for measurement accuracy and postocclusion surge (POS) in human cadaver eyes. Design: In vitro comparisons of machine accuracy and POS. Methods: Tip vacuum and flow were compared with machine indicated vacuum and flow. All machines were placed in two human cadaver eyes and POS was determined. Results: Vacuum (% of actual) was 101.9% ± 1.7% for Infiniti (Alcon, Fort Worth, Texas, USA), 93.2% ± 3.9% for Stellaris (Bausch & Lomb, Rochester, New York, USA), and 107.8% ± 4.6% for Signature (Advanced Medical Optics, Santa, Ana, California, USA; P < .0001). At 60 ml/minute flow, actual flow and unoccluded flow vacuum (UFV) was 55.8 ± 0.4 ml/minute and 197.7 ± 0.7 mm Hg for Infiniti, 53.5 ± 0.0 ml/minute and 179.8 ± 0.9 mm Hg for Stellaris, and 58.5 ± 0.0 ml/minute and 115.1 ± 2.3 mm Hg for Signature (P < .0001). POS in an 32-year-old eye was 0.33 ± 0.05 mm for Infiniti, 0.16 ± 0.06 mm for Stellaris, and 0.13 ± 0.04 mm for Signature at 550 mm Hg, 60 cm bottle height, 45 ml/minute flow with 19-gauge tips (P < .0001 for Infiniti vs Stellaris and Signature). POS in an 81-year-old eye was 1.51 ± 0.22 mm for Infiniti, 0.83 ± 0.06 mm for Stellaris, 0.67 ± 0.01 mm for Signature at 400 mm Hg vacuum, 70 cm bottle height, 40 ml/minute flow with 19-gauge tips (P < .0001). Conclusions: Machine-indicated accuracy, POS, and UFV were statistically significantly different. Signature had the lowest POS and vacuum to maintain flow. Regarding POS, Stellaris was close to Signature; regarding vacuum to maintain flow, Infiniti and Stellaris were similar. Minimizing POS and vacuum to maintain flow potentially are important in avoiding ocular damage and surgical complications.
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U2 - 10.1016/j.ajo.2008.01.024
DO - 10.1016/j.ajo.2008.01.024
M3 - Article
C2 - 18343350
AN - SCOPUS:43949123241
SN - 0002-9394
VL - 145
SP - 1014-1017.e1
JO - American journal of ophthalmology
JF - American journal of ophthalmology
IS - 6
ER -