Outcomes of torsional microcoaxial phacoemulsification performed by 12-degree and 22-degree bent tips

Helvacıoğlu, Fırat; Yeter, Celal; Tunc, Zeki; Şencan, Sadık

doi:10.1016/j.jcrs.2013.03.002

Cited by 11 publications

(8 citation statements)

References 18 publications

(21 reference statements)

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“…First, an increasing bevel exposes a greater cross-sectional area to lens matter, increasing its cutting efficiency. Secondly, the bend in the shaft of the tip increases the area it traverses on each stroke so the 22-degree bent 30-degree Kelman mini-flared tip cuts longer than the 12-degree bent 30-degree mini-flared Kelman tip [ 18 , 19 ].…”

Section: Discussionmentioning

confidence: 99%

Effect of IOP based infusion system with and without balanced phaco tip on cumulative dissipated energy and estimated fluid usage in comparison to gravity fed infusion in torsional phacoemulsification

et al. 2017

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BackgroundTo evaluate the effect of three different combinations of tip designs and infusion systems in torsional phacoemulsification (INFINITI and CENTURION) in patients with cataract. According to the manufacturer, two unique improvements in the Centurion are: active fluid dynamic management system and use of an intrepid balanced tip. The study specifically aimed to evaluate the beneficial effects, if any, of change in tip design and infusion system individually and in combination on both per-operative parameters as well as endothelial health over 6 months.MethodsOne hundred and twenty six consenting patients of grade 4.0–6.9 senile cataract were randomized into three groups for phacoemulsification: Group A (n = 42): Gravity fed infusion system and 450 Kelman miniflared ABS phaco tip; Group B (n = 42): intraocular pressure (IOP) based infusion system and 450 Kelman miniflared ABS phaco tip; Group C (n = 42): IOP based infusion system and 450 Intrepid balanced phaco tip. The cumulative dissipated energy (CDE), estimated fluid usage (EFU) and total aspiration time (TAT) were compared peroperatively. The endothelial parameters were followed up postoperatively for six months.ResultsThe three arms were matched for age (p = 0.525), gender (p = 0.96) and grade of cataract (p = 0.177). Group C was associated with significant reductions in CDE (p = 0.001), EFU (p < 0.0005) as well as TAT (p = 0.001) in comparison to the other groups. All three groups had comparable baseline endothelial cell density (p = 0.876) and central corneal thickness (p = 0.561). On post-operative evaluation, although all groups were comparable till 3 months, by 6 months, the percentage losses in endothelial cell density were significantly lower in group C as compared to the other groups.ConclusionsUse of an IOP based phacoemulsification system in association with use of the Intrepid balanced tip reduces the CDE, EFU and TAT in comparison to a gravity fed system with a mini flared tip or IOP based system with a mini flared tip while also providing better endothelial preservation thus favouring the use of an IOP fed system with a balanced tip.Trial registrationTrial registration No.: CTRI/2016/06/007022.

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Section: Discussionmentioning

confidence: 99%

Effect of IOP based infusion system with and without balanced phaco tip on cumulative dissipated energy and estimated fluid usage in comparison to gravity fed infusion in torsional phacoemulsification

et al. 2017

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“…Modern techniques and high-performance machines have combined to produce innumerable effective strategies for phacoemulsification with somewhat different but comparatively similar results. Increased cutting efficiency with lower CDE measurement has been achieved with 22° (Kelman) vs 12° (Partial Kelman) distal shaft angles and 45° vs 30° tip aperture angles 10 , 11 because of relatively greater tip movement at the aperture edge vs the shaft, where CDE is defined and measured. Aspiration efficiency has also been improved with torsional tip motion, especially with the Partial Kelman tip vs the straight tip, because of the reduction in repulsion and increased followability of nuclear material.…”

Section: Discussionmentioning

confidence: 99%

Results of endocapsular phacofracture debulking of hard cataracts

Davison¹

2015

OPTH

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Purpose/aim of the studyTo present a phacoemulsification technique for hard cataracts and compare postoperative results using two different ultrasonic tip motions during quadrant removal.Materials and methodsA phacoemulsification technique which employs in situ fracture and endocapsular debulking for hard cataracts is presented. The prospective study included 56 consecutive cases of hard cataract (LOCS III NC [Lens Opacification Classification System III, nuclear color], average 4.26), which were operated using the Infiniti machine and the Partial Kelman tip. Longitudinal tip movement was used for sculpting for all cases which were randomized to receive longitudinal or torsional/interjected longitudinal (Intelligent Phaco [IP]) strategies for quadrant removal. Measurements included cumulative dissipated energy (CDE), 3 months postoperative surgically induced astigmatism (SIA), and corneal endothelial cell density (ECD) losses.ResultsNo complications were recorded in any of the cases. Respective overall and longitudinal vs IP means were as follows: CDE, 51.6±15.6 and 55.7±15.5 vs 48.6±15.1; SIA, 0.36±0.2 D and 0.4±0.2 D vs 0.3±0.2 D; and mean ECD loss, 4.1%±10.8% and 5.9%±13.4% vs 2.7%±7.8%. The differences between longitudinal and IP were not significant for any of the three categories.ConclusionThe endocapsular phacofracture debulking technique is safe and effective for phacoemulsification of hard cataracts using longitudinal or torsional IP strategies for quadrant removal with the Infiniti machine and Partial Kelman tip.

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“…Значительная часть исследований решала задачу оценки отдельных техник проведения операции (в т.ч. использования различных видов расходных материалов) на платформах, а не самих платформ [4][5][6][7][8][9][10][11][12][13]. Поиск также продемонстрировал многообразие дизайнов исследований: помимо клинических исследований при оценке платформ для факоэмульсификации широкое использование получили и лабораторные исследования (около 30% от всех найденных исследований были выполнены на лабораторных моделях (на основе глаз свиньи или кролика, или сконструированных тестовых моделей ) с контролем таких параметров как прорыв окклюзии, время аспирации, изменение температуры во время процедуры факоэмульсификации, кумулятивной рассеянной энергии и т.п.…”

Section: материалы и методыunclassified

Health technology assessment of cataract phacoemulsification platforms

Kulikov¹,

Serpik²,

Protsenko³

et al. 2019

Pharmacoeconom T&P

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Pharmacoeconomics theory and practice  МЕТОДОЛОГИЧЕСКИЕ ОСНОВЫ АНАЛИЗА ЭФФЕКТИВНОСТИ МЕДИЦИНСКИХ ТЕХНОЛОГИЙ ПРИ ПРОВЕДЕНИИ ФАРМАКОЭКОНОМИЧЕСКИХ ИССЛЕДОВАНИЙ  IX НАЦИОНАЛЬНЫЙ КОНГРЕСС С МЕЖДУНАРОДНЫМ УЧАСТИЕМ РАЗВИТИЕ ФАРМАКОЭКОНОМИКИ И ФАРМАКОЭПИДЕМИОЛОГИИ В РОССИЙСКОЙ ФЕДЕРАЦИИ ФАРМАКОЭКОНОМИКА 2015 16 17 МАРТА 2015 Г., УФА, AZIMUT ОТЕЛЬ УФА Фармакоэкономика теория и практика Pharmacoeconomics theory and practice

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Outcomes of torsional microcoaxial phacoemulsification performed by 12-degree and 22-degree bent tips

Abstract: Torsional phacoemulsification performed with 22-degree bent tips provided more effective lens removal than 12-degree bent tips, with a lower UST and CDE.

Cited by 11 publications

References 18 publications

Effect of IOP based infusion system with and without balanced phaco tip on cumulative dissipated energy and estimated fluid usage in comparison to gravity fed infusion in torsional phacoemulsification

Effect of IOP based infusion system with and without balanced phaco tip on cumulative dissipated energy and estimated fluid usage in comparison to gravity fed infusion in torsional phacoemulsification

Results of endocapsular phacofracture debulking of hard cataracts

Health technology assessment of cataract phacoemulsification platforms

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