Intraoperative performance and postoperative outcome comparison of longitudinal, torsional, and transversal phacoemulsification machines

Christakis, Panos G.; Braga-Mele, Rosa

doi:10.1016/j.jcrs.2011.08.035

Cited by 41 publications

(51 citation statements)

References 29 publications

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“…The difference between the groups in this minimal level of corneal edema did not reach statistical significance. However, Christakis and Braga-Mele5 found that torsional technology yielded less central corneal edema than the transversal and longitudinal technologies, corresponding to a smaller increase in the mean corneal thickness (torsional, 5%; transversal, 10%; longitudinal, 12%). One of the main factors accounting for this discrepancy with our findings may be the difference in the nuclear cataract grade, which was NC 2.0 ± 0.8 in Christakis and Braga-Mele’s study 5…”

Section: Discussionmentioning

confidence: 96%

“…Torsional and transversal phaco modes are the results of these technological advances. Several studies have confirmed and reported the superiority of torsional phaco over longitudinal phaco in terms of needle time, chatter, followability, corneal edema, and corneal endothelium 1,5,7–12,19,20. However, to date, only one study has compared longitudinal, torsional, and transversal phaco 5.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, Christakis and Braga-Mele5 recently compared the clinical outcomes obtained after the same surgeon performed cataract surgery with phaco, using three different systems: WhiteStar Signature ® Ellips™ FX (transversal), Infiniti ® OZil ® IP (torsional), and Stellaris ® (Bausch and Lomb, Rochester, NY, USA) (longitudinal). These authors evaluated the phaco needle time, chatter, followability, the anterior chamber stability, the level of corneal edema, and the 1-day postoperative visual acuity.…”

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of corneal morphological changes after transversal and torsional phacoemulsification through 2.2 mm corneal incision

Assaf¹,

Roshdy²

2013

OPTH

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PurposeThis paper compares and evaluates the corneal morphological changes occurring after cataract surgery through a 2.2 mm corneal incision. We use two platforms for comparison and evaluation, transversal and torsional phacoemulsification.Patients and methodsThis study includes 139 consecutive cataractous eyes (nuclear color 2–4, according to the Lens Opacities Classification System III [LOCSIII]) of 82 patients undergoing cataract surgery through a 2.2 mm corneal incision. Two different phacoemulsification platforms were used and assigned randomly: we used the WhiteStar Signature® system with the Ellips™ FX transversal continuous ultrasound (US) mode for group I (mean age: 65.33 ± 6.97 years), and we used the Infiniti® system with the OZil® Intelligent Phaco (IP) torsional US mode for group II (mean age: 64.02 ± 7.55 years). The corneal endothelium and pachymetry were evaluated preoperatively and at 1 month postoperatively. Incision size changes were also evaluated.ResultsAll surgeries were uneventful. Before intraocular lens implantation, the mean incision size was 2.24 ± 0.06 mm in both groups (P = 0.75). In terms of corneal endothelial cell density, neither preoperative (I vs II: 2304.1 ± 122.5 cell/mm2 vs 2315.6 ± 83.1 cell/mm2, P = 0.80) nor postoperative (I vs II: 2264.1 ± 124.3 cell/mm2 vs 2270.3 ± 89.9 cell/mm2, P = 0.98) differences between the groups were statistically significant. The mean endothelial cell density loss was 1.7% ± 1.6% and 2.0% ± 1.4% in groups I and II, respectively. Furthermore, no significant differences between groups I and II were found preoperatively (P = 0.40) and postoperatively (P = 0.68) in central pachymetry. With surgery, the mean increase in central pachymetry was 28.1 ± 23.6 μm and 24.0 ± 24.0 μm in groups I and II, respectively (P = 0.1).ConclusionEllips™ FX transversal and OZil® IP torsional phacoemulsification modes are safe for performing cataract surgery, inducing minimal corneal thickness and endothelial changes.

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of corneal morphological changes after transversal and torsional phacoemulsification through 2.2 mm corneal incision

Assaf¹,

Roshdy²

2013

OPTH

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“…Cataract surgery is improving in a rapid pace. Surgical parameters such as phacoemusification time, used amount of ultrasound energy and size of incisions were reduced to allow a minimal invasive procedure . Additionally, advances of the intraocular lens (IOL) design procure a better visual outcome and a safer surgery .…”

Section: Introductionmentioning

confidence: 99%

Can we improve the efficacy of modern cataract surgery by using different tip designs? A comparison of balanced and tapered tip in femtosecond laser‐assisted cataract surgery and manual phacoemulsification

Pahlitzsch

Sumarni

2017

Clinical Exper Ophthalmology

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“…In recent years, remarkable advances have been made in phacoemulsifier (phaco) devices for use in cataract surgery, enabling the insertion of ultrasound (US) tips and sleeves via microincisions, improving anterior chamber stability, and increasing surgical efficiency even with low phaco power output during nuclear phacoemulsification [1][2][3][4]. The Infiniti ® Vision System platform (Alcon Laboratories, Inc., Fort Worth, TX, USA) (hereinafter Infiniti) enables torsional phacoemulsification with the Ozil ® handpiece in addition to conventional longitudinal phacoemulsification [5,6].…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Intraoperative Metrics between the Infiniti with and the Centurion without Intelligent Phacoemulsification Systems

Ataka¹,

Ogawa²,

Miura³

et al. 2017

J Eye Cataract Surg

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Purpose: To compare the efficiency and safety of two phacoemulsification systems, the Infiniti with intelligent phacoemulsification (IP) and the Centurion without IP, in terms of intraoperative metrics of phacoemulsification and the occurrences of adverse events and intraoperative tip obstruction. Design:Comparative case series. Methods:A consecutive series of 340 eyes (151 eyes with the Infiniti, 189 eyes with the Centurion) was evaluated. A 2.4 mm sclerocorneal incision was used with the Infiniti, and a 2.0 mm incision was used with the Centurion. Phacoemulsification of the nucleus was performed using the phaco chop technique, with the IP function of the Infiniti turned on and the IP mode of the Centurion turned off. From among the parameters displayed on the panels of both devices, ultrasound (US) time, cumulative dissipated energy (CDE), aspiration time, and estimated balanced salt solution (BSS) aspiration volume were investigated and compared between the devices. Results: A comparison of all subjects found significant differences between the two devices in mean CDE (p=0.02) and mean aspiration time (p=0.003), but not in mean US time (p=0.43) or mean estimated BSS aspiration volume (p=0.07). For grade 3 nuclei, all parameters of mean US time (p=0.0044), mean CDE (p ≤ 0.001), mean aspiration time (p<0.001), and mean estimated BSS aspiration volume (p=0.001) showed significant differences favoring the Centurion. Conclusions:Compared to the Infiniti with IP mode, cataract surgery with the Centurion without IP mode is likely to be performed with less phacoemulsification energy and higher efficiency.

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Intraoperative performance and postoperative outcome comparison of longitudinal, torsional, and transversal phacoemulsification machines

Cited by 41 publications

References 29 publications

Comparative analysis of corneal morphological changes after transversal and torsional phacoemulsification through 2.2 mm corneal incision

Comparative analysis of corneal morphological changes after transversal and torsional phacoemulsification through 2.2 mm corneal incision

Can we improve the efficacy of modern cataract surgery by using different tip designs? A comparison of balanced and tapered tip in femtosecond laser‐assisted cataract surgery and manual phacoemulsification

A Comparison of Intraoperative Metrics between the Infiniti with and the Centurion without Intelligent Phacoemulsification Systems

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