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. 2016 Jun 18;9(6):890-7.
doi: 10.18240/ijo.2016.06.18. eCollection 2016.

An evaluation of intraoperative and postoperative outcomes of torsional mode versus longitudinal ultrasound mode phacoemulsification: a Meta-analysis

Pia Leon  1 , Ingrid Umari  1 , Alessandro Mangogna  2 , Andrea Zanei  1 , Daniele Tognetto  1
Affiliations

An evaluation of intraoperative and postoperative outcomes of torsional mode versus longitudinal ultrasound mode phacoemulsification: a Meta-analysis

Pia Leon et al. Int J Ophthalmol. .

Abstract

Aim: To evaluate and compare the intraoperative parameters and postoperative outcomes of torsional mode and longitudinal mode of phacoemulsification.

Methods: Pertinent studies were identified by a computerized MEDLINE search from January 2002 to September 2013. The Meta-analysis is composed of two parts. In the first part the intraoperative parameters were considered: ultrasound time (UST) and cumulative dissipated energy (CDE). The intraoperative values were also distinctly considered for two categories (moderate and hard cataract group) depending on the nuclear opacity grade. In the second part of the study the postoperative outcomes as the best corrected visual acuity (BCVA) and the endothelial cell loss (ECL) were taken in consideration.

Results: The UST and CDE values proved statistically significant in support of torsional mode for both moderate and hard cataract group. The analysis of BCVA did not present statistically significant difference between the two surgical modalities. The ECL count was statistically significant in support of torsional mode (P<0.001).

Conclusion: The Meta-analysis shows the superiority of the torsional mode for intraoperative parameters (UST, CDE) and postoperative ECL outcomes.

Keywords: conventional (longitudinal) phacoemulsification; phacoemulsification; torsional phacoemulsification.

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Figures

Figure 1
Figure 1. Flow chart of literature search and study selection.
Figure 2
Figure 2. Forest plot comparison of mean UST
Subgroup based on nuclear opacity grade (NO).
Figure 3
Figure 3. Forest plot comparison of mean CDE
Subgroup based on nuclear opacity (NO) grade.
Figure 4
Figure 4. Forest plot comparison of mean UST and mean CDE for moderate cataract group
A: Forest plot comparison of mean UST for moderate cataract group; B: Forest plot comparison of mean CDE for moderate cataract group. Subgroup based on nuclear opacity (NO) grade.
Figure 5
Figure 5. Forest plot comparison of mean UST and mean CDE for hard cataract group
A: Forest plot comparison of mean UST for hard cataract group; B: Forest plot comparison of mean CDE for hard cataract group.
Figure 6
Figure 6. Forest plot comparison of ECL
A: After 1wk; B: 1mo; C: 3mo.
See this image and copyright information in PMC

References

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