Quantitative thermographic analysis of viscoelastic substances in an experimental study in rabbits

Jurowski, Piotr; Goś, Roman; Kusmierczyk, Jaroslaw; Owczarek, Grzegorz; Gralewicz, Grzegorz

doi:10.1016/j.jcrs.2005.11.025

Cited by 12 publications

(11 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[19] New ophthalmic viscosurgical devices, such as Viscoat, Provisc, and soft-shell technique, decrease thermal effect. [20] Thus, in certain cases of complicated cataract after PKP such as cases in which nuclear hardness is ≤III, better postoperative visual acuity is demanded, and an advanced technology IOL is preferred, phacoemulsification should be suggested. Our study has potential limitations as a retrospective cohort study which spanned 13 years.…”

Section: Discussionmentioning

confidence: 99%

Effects of Cataract Surgery on Endothelium in Transplanted Corneal Grafts

Zhou

Xie

2016

Chinese Medical Journal

View full text Add to dashboard Cite

Background:The endothelium should be carefully evaluated when choosing a surgical technique for cataract removal. Therefore, we aimed to study the effects of different cataract surgery techniques on endothelial cell loss in transplanted corneal grafts.Methods:A total of 54 patients who received complicated cataract surgery in post-penetrating keratoplasty (PKP) eyes at the Shandong Eye Institute between February 2001 and June 2014 were included, and clinical records were reviewed. Baseline demographic details, clinical characteristics, endothelial cell density (ECD), and best-corrected visual acuity (BCVA) were recorded. Wilcoxon rank-sum test and Wilcoxon signed-rank test were used to test the equality of medians. A regression model was constructed to compare the reduced rate of ECD.Results:Of the 54 eyes included in this study, extracapsular cataract extraction (ECCE) was performed in 34 eyes of 33 patients (ECCE group) whereas phacoemulsification was performed in 20 eyes of 20 patients (phacoemulsification group). There was no significant difference in the median age (P = 0.081) or preoperative ECD (P = 0.585) between the two groups. At 6 months after cataract surgery, ECD in ECCE group was significantly higher than that in phacoemulsification group (P = 0.043). In addition, the endothelial cell loss rate in ECCE group was significantly lower than that in phacoemulsification group at 2 months (P = 0.018), 4 months (P < 0.001), and 6 months (P < 0.001) after cataract surgery. Endothelial cell loss rate after cataract surgery increased over the 6-month study duration in both ECCE group (P < 0.001) and phacoemulsification group (P < 0.001), but phacoemulsification resulted in a greater reduction in ECD than that of ECCE in transplanted corneal grafts (P < 0.001). There was no significant difference in postoperative BCVA between the two groups (P = 0.065).Conclusion:ECCE is more suitable than phacoemulsification in cataract surgery in complicated cataract after PKP.

show abstract

Section: Discussionmentioning

confidence: 99%

Effects of Cataract Surgery on Endothelium in Transplanted Corneal Grafts

Zhou

Xie

2016

Chinese Medical Journal

View full text Add to dashboard Cite

show abstract

“…Infrared cameras have been used to measure temperature during phacoemulsification (Corvi et al 2006;Jurowski et al 2006;Mencucci et al 2005). However, because an infrared camera provides only the temperature of the corneal surface and the accuracy of such measurements is limited, FEM simulations were used in this study to calculate the maximum temperature rise at the endothelium and to obtain information about its dependence on the system settings.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the distribution of the heat generated inside the anterior chamber by fluid flow is still poorly understood. Amplitude setting, flow rate and duty cycle in the pulse mode have been identified as parameters affecting heat transfer and temperature elevation (Braga-Mele 2006;Jurowski et al 2006;Yamagami and Yamagami 1998), but a thorough understanding of the influence of these system settings has not yet been established.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Determination of the Local Temperature Distribution during Phacoemulsification and Comparison of Different Surgery Situations within Enucleated Porcine Eyes

Buschschlüter

Eicken

Koch

et al. 2015

Ultrasound in Medicine & Biology

View full text Add to dashboard Cite

“…In order to reduce endothelial injury, the following alternatives have been developed: viscoelastic substances (12)(13)(14)(15) ; special surgical techniques such as, for example, nuclear prefracture; and new modalities of tip vibration at ultrasonic frequency, such as the White-star ® , Neosonix ® , dynamic rising time and torsional systems (1,2,5,6,(16)(17)(18)(19)(20)(21)(22)(23) . By the year 2000, an alternative technology was proposed for cataracts surgery (5,16,17) .…”

Section: Introductionmentioning

confidence: 99%

Comparison of central corneal edema and visual recovery between liquefaction and conventional phacoemulsification in soft cataracts

Nakano¹,

Hida²,

Kara‐José³

et al. 2009

Rev. bras.oftalmol.

View full text Add to dashboard Cite

Purpose:The aim of the present study is to assess central corneal edema and visual recovery after cataract surgery performed according to two technologies: conventional ultrasonic and liquefaction (Aqualase ® ). Methods: This is a prospective contralateral study in wich 20 patients with comparable preoperative conditions were submitted to cataract surgery were evaluated. Preoperative assessment involved complete ophthalmological examination and the study included patients with bilateral cataracts up to grade 2, according to the Lens Opacity Classification System II. The same cristaline fracture technique was used in all cases, and surgical procedures were performed by the same experienced surgeon, using two technologies: liquefaction or conventional phacoemulsification. Postoperative central corneal edema was measured by corneal optical pachymetry (Orbscan II ® ) on the 1 st , 3 rd , 7 th and 10 th postoperative days. Results: None of the 20 patients submitted to surgery was lost during the postoperative follow-up or excluded from the analysis. On the first postoperative, the visual acuity average was 0.031 logMAR in the Aqualase ® group and 0.043 logMAR in the conventional surgery group. No statistical difference was detected in the assessment of visual acuity throughout the postoperative period. Central corneal pachymetry varied from 543.93 + 34.69 preoperatively to 545.08 ± 25.67 on the last day of follow-up in the Aqualase ® group, and from 543.13 + 30.62 to 536.08 + 34.89 in the conventional technique group, without statistical significance. Conclusion: This study suggests that both techniques are equally effective for surgery on lenses with grade I or II cataract, and that they provide similar results in terms of visual recovery and central corneal edema.

show abstract

Quantitative thermographic analysis of viscoelastic substances in an experimental study in rabbits

Cited by 12 publications

References 16 publications

Effects of Cataract Surgery on Endothelium in Transplanted Corneal Grafts

Effects of Cataract Surgery on Endothelium in Transplanted Corneal Grafts

Experimental and Numerical Determination of the Local Temperature Distribution during Phacoemulsification and Comparison of Different Surgery Situations within Enucleated Porcine Eyes

Comparison of central corneal edema and visual recovery between liquefaction and conventional phacoemulsification in soft cataracts

Contact Info

Product

Resources

About