Comparison of sonic and ultrasonic phacoemulsification using the Staar Sonic Wave system

Hoffman, Richard S.; Fine, Ione; Packer, Mark; Brown, Laurie K

doi:10.1016/s0886-3350(01)01324-4

Cited by 20 publications

(10 citation statements)

References 4 publications

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“…Recent developments in phacoemulsification technology have led to benefits including decreased postocclusion surge and improved fluidics. Moreover, user-controlled parameters, such as interrupted phaco modes, vacuum settings, and variable aspiration flow rates, [1][2][3][4][5][6][7][8][9][10][11][12] have increased the safety and predictability of the outcomes of cataract and refractive lens exchange procedures. Furthermore, increased surgeon confidence when using phacoemulsification techniques has led to experimentation with intentionally altered flow parameters.…”

Section: Resultsmentioning

confidence: 99%

“…Associated benefits of improved technique is protection of the corneal endothelium against damage and less trauma to other intraocular tissues, which can cause complications such as posterior capsule rupture, uveal tissue trauma, and vitreous loss. [1][2][3][4][5][6][7][8][9][10][11][12] In a previous observational study, we explored the intraoperative effect of using low or high fluidic parameters (eg, vacuum settings, bottle heights, and as- . We determined that IOP fluctuations and absolute IOP levels with lower fluidic parameters, specifically aspiration flow rate and bottle height, were lower than with higher fluidic parameters.…”

Section: Discussionmentioning

confidence: 99%

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Impact of high and low aspiration parameters on postoperative outcomes of phacoemulsification: Randomized clinical trial

Vasavada¹,

Praveen²,

Vasavada³

et al. 2010

Journal of Cataract and Refractive Surgery

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Impact of high and low aspiration parameters on postoperative outcomes of phacoemulsification: Randomized clinical trial

Vasavada¹,

Praveen²,

Vasavada³

et al. 2010

Journal of Cataract and Refractive Surgery

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“…In recent years, technological developments have led to advances in cataract surgery and many ways to reduce US energy have been achieved. Examples include nonultrasonic energy such as sonic frequencies, 11 NeoSoniX-generated tip rotation, 12,13 and pulse water-jet technology. 2 Restricting energy to fractions of second pulses or bursts 14,15 and millisecond-level microburst, 16 tip design, 17 and specific chopping technique [18][19][20][21][22][23] are favorable to lower energy.…”

Section: Discussionmentioning

confidence: 99%

Torsional mode versus conventional ultrasound mode phacoemulsification

Liu¹,

Zeng²,

Liu³

et al. 2007

Journal of Cataract and Refractive Surgery

164

147

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“…To protect the endothelium during cataract surgery, viscoelastic material maintains the anterior chamber depth, cushions the endothelium from the insertion of an IOL and acts as a barrier against the turbulent surgical environment (18)(19) . Other technologies and techniques have also improved cataract surgery, with reduction of the US energy produced (20)(21)(22)(23) .…”

Section: Discussionmentioning

confidence: 99%

Effect of bevel position on the corneal endothelium after phacoemulsification

Raskin¹,

Paula²,

Cruz³

et al. 2010

Arq. Bras. Oftalmol.

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Purpose: To compare the extent of corneal endothelial (CE) cell loss changes in two groups of eyes submitted to phacoemulsification, with the conventional bevel-up tip position in one eye and with the bevel-down tip position in the fellow eye. Methods: This prospective clinical trial comprised 25 patients with bilateral cataracts subjected to lens removal by phacoemulsification with the conventional bevel-up tip position (GI) in one eye and with the bevel-down tip position (GII) in the fellow eye. The nuclei were graded clinically on the basis of hardness. The endothelial cell count (ECC) was evaluated preoperatively and 1, 3 and 6 months postoperatively. Total surgical time, effective ultrasound time and complications were also compared between the groups. Statistical analysis was performed by the Tukey Studentized Range test, with repeated measures for the selected periods. For the other parameters a paired t test was used. Data are presented as mean ± SD, with the level of significance set at p<0.05. Results: The mean effective ultrasound time was 8.08 ± 6.75 seconds in group I and 7.00 ± 5.75 seconds in GII (P=0.1792) and total surgical time was 10.01 ± 2.46 minutes in GI and 9.86 ± 2.17 minutes in GII (p=0.6267), respectively. The paired t test revealed no statistical differences between the groups. Complications were also similar between the groups. Mean endothelial cell count loss was 6.9% in GI and 2.8% in GII at one month; 6.9% in GI and 3.6% in GII at three months and 11.9% in GI and 7.6% in GII at six months postoperatively. Comparison of endothelial cell count (ECC) showed a statistically significant difference between the groups during the postoperative period. Conclusion:The conventional bevel-up tip position has a negative effect on corneal endothelial cells compared with the bevel-down position. Since the results of other surgical parameters were similar, the bevel-down tip position should be considered as an option in non-complicated phacoemulsification. Keywords: Cataract extraction; Phacoemulsification/methods; Endothelium, corneal/surgery; Comparative study RESUMO Objetivo: Comparamos duas técnicas de cirurgia de catarata. A técnica cirúr-gica tradicional, em que direciona a abertura do bisel da ponteira de facoemulsificação para o endotélio corneano, com a técnica oposta, onde a reversão da posição de abertura permite o direcionamento da energia de emulsificação para o núcleo. Estudamos seus efeitos sobre a córnea e possíveis complicações. Métodos: O trabalho foi divido em quatro tempos: pré-operatório e após 30, 60 e 180 dias. Os pacientes foram divididos em dois grupos: o grupo 1, tratado com a técnica cirúrgica tradicional, com a abertura da ponteira direcionada para o endotélio, e grupo 2, que recebeu tratamento com técnica oposta, direcionada diretamente para o núcleo ou para os fragmentos nucleares. Após as cirurgias, foram estudados: perda endotelial após 30, 60 e 180 dias, tempo total de cirurgia e tempo efetivo de faco. Resultados: Os resultados intraoperatórios apresentaram...

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Comparison of sonic and ultrasonic phacoemulsification using the Staar Sonic Wave system

Abstract: Sonic technology yielded outcomes similar to those of ultrasonic phacoemulsification with respect to postoperative visual acuity and corneal edema in patients with average density nuclear sclerotic cataract.

Cited by 20 publications

References 4 publications

Impact of high and low aspiration parameters on postoperative outcomes of phacoemulsification: Randomized clinical trial

Impact of high and low aspiration parameters on postoperative outcomes of phacoemulsification: Randomized clinical trial

Torsional mode versus conventional ultrasound mode phacoemulsification

Effect of bevel position on the corneal endothelium after phacoemulsification

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