A capsulotomia descontínua durante a facoemulsificação

Centurion, Virgílio; Lacava, Augusto Cézar; Caballero, Juan Carlos

doi:10.1590/s0034-72802011000600006

Cited by 3 publications

(4 citation statements)

References 6 publications

(7 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the total emission time of ultrasound in PE is considered a major risk factor for the development of postoperative corneal edema, delaying the usual visual rehabilitation. The indication of the best technique for the treatment of cataracts with hard cores is still a challenge [39][40][41]. PE has the advantage of a smaller incision with faster recovery and the disadvantage of requiring a greater amount of ultrasonic energy for hard nuclei, increasing damage to the corneal endothelium [42,43].…”

Section: Major Findings and Discussionmentioning

confidence: 99%

Phacoemulsification associated with loss of endothelial cells in cataract surgery: a systematic review of main surgical techniques

Garcia¹,

Liedtke²

2023

MedNEXT

View full text Add to dashboard Cite

Introduction: Phacoemulsification (PE) cataract surgery is the gold standard in ophthalmology, being effective in improving vision in more than 90.0% of patients. In this context, authors found that PE was associated with 16.67% of endothelial cell loss, which correlated with the degree of trauma during surgery. Endothelial changes are considered an important parameter for assessing trauma and for estimating the safety of a surgical technique. In this sense, more modern PE machines are capable of removing cataracts using optimized parameters such as high vacuum, aspiration flow, and low amount of ultrasonic energy. Objective: It was to present and discuss the main phacoemulsification techniques for optimizing the treatment of cataracts, in an attempt to reduce the loss of corneal endothelial cells. Methods: Experimental and clinical studies were included (case reports, retrospective, prospective, and randomized studies) with qualitative and/or quantitative analysis. Initially, the keywords were determined by searching the DeCS tool (Descriptors in Health Sciences, BIREME base) and later verified and validated by MeSH Terms. The search literature was carried out from January to April 2023 in Scopus, PubMed, Science Direct, Scielo, and Google Scholar databases. Results: A total of 122 articles involving phacoemulsification and endothelial cells were found. Initially, the existing title and duplications were excluded according to the interest described in this work. After this process, the abstracts were evaluated and a new exclusion was performed. A total of 80 articles were evaluated in full and 59 were included and discussed in this study. At the beginning of treatment with PE, without the endothelial protection of viscoelastic agents and the use of ultrasound in the anterior chamber, the endothelial loss was greater than in extracapsular cataract extraction. With the modernization of PE, the use of viscoelastic agents, the emergence of techniques for fracture of the nucleus within the capsular bag, and the use of ultrasound in the posterior chamber, the loss of endothelial cells reduced from 7 to 12% on average. Conclusion: Endothelial changes are considered an important parameter to assess trauma and estimate the safety of a surgical technique. Highlighted, the main predictors associated with the loss of corneal endothelial cells are the duration of the ultrasound used in the surgery, the turbulence of the liquid in the anterior chamber, and the mechanical trauma.

show abstract

Section: Major Findings and Discussionmentioning

confidence: 99%

Phacoemulsification associated with loss of endothelial cells in cataract surgery: a systematic review of main surgical techniques

Garcia¹,

Liedtke²

2023

MedNEXT

View full text Add to dashboard Cite

show abstract

“…The complication was less frequent in G1 patients (immature), wherein the nuclei, being less dense, fragmented into two fracture lines, forming the "V" as desired. In medicine there is a consensus indicating early phacoemulsification (Jaffe Jaffe, & Jaffe, 1990;Akahoshi, 1998;Freitas, 2002;Centurion et al, 2004), which has been adopted in Veterinary Medicine (Wilkie & Colitz, 2007), as the majority of primary cataracts in dogs will progress to more advanced stages in which the degree of core hardness will be greater (La Croix, 2008).…”

Section: Discussionmentioning

confidence: 99%

“…Variations in extracapsular techniques have been described in order to decrease postoperative complications. Currently the preferred procedure is phacoemulsification, which constitutes lens ultrasonic fragmentation, with subsequent aspiration of emulsified material through a small incision in the clear cornea (Glover & Constantinescu, 1997;Centurion, Lacava, & Caballero, 2004;Resnikoff et al, 2004;Zhao et al, 2015;Nasisse et al, 1991;Bistner, 1992;Wilkie & Colitz, 2007;La Croix, 2008).…”

Section: Introductionmentioning

confidence: 99%

V-Prechop nucleodissection technique feasibility in the phacoemulsification in dogs with cataracts. Clinical aspects and specular microscopy

Andrade¹,

Araçatuba²,

Conceição³

et al. 2020

Semina: Ciênc. Agrár.

View full text Add to dashboard Cite

The aim of this study was to evaluate the feasibility of the V-Prechop nucleodissection technique in the phacoemulsification in dogs and the clinical aspects and of the specular microscopy in the postoperative period. Fourty three dogs of different breeds, males and females, aged 3 to 10 years, with mature (n=22) and immature (n=21) cataracts were used. After surgery, patients were evaluated weekly for visual acuity, intraocular pressure, and endothelial corneal cell density (by non-contact specular microscopy) and quantitative flare (by laser flare photometry) during different periods. The "V-prechop" technique presented technical difficulties in implementation in patients with a mature cataract. In selected cases of patients with an immature cataract, the technique can be employed, as the nuclei are softer, allowing confection of the linear fragments in “V” to be performed. In addition, the eyes of dogs with a mature cataract presented more intensive postoperative uveitis, probably related to the greater difficulty in conducting the "V" nucleodissection. There was decreased endothelial corneal cell density in dogs with mature and immature cataracts. This occurrence was greater in patients with a mature cataract, given the increased intraocular manipulation and surgical time due to the difficulty in performing the “V” nucleodissection. According to the results obtained, the “V-prechop” nucleodissection technique can be indicated in selective cases of dogs with an immature cataract.

show abstract

“…Our study did not analyse cases of red, intumescent, or subluxated cataract. Further investigation is required to measure the frequency of complications in special cases [29][30][31] . Cataract patients tend to show high levels of anxiety during the pre-and postoperative periods, as well as during the procedure.…”

Section: Comparison Of Capsulotomy Area (Shape) Between Femtosecond Lmentioning

confidence: 99%

Comparison between femtosecond laser capsulotomy and manual continuous curvilinear digital image guided capsulorrhexis

Hida¹,

Chaves²,

Gonçalves³

et al. 2014

Revista Brasileira De Oftalmologia

View full text Add to dashboard Cite

Purpose: To measure and compare size and shape parameters of femtosecond laser capsulotomy with manually continuous curvilinear digital guided capsulorhexis (CCC) and their refractive outcomes. Methods: Laser capsulotomies in 40 eyes of 40 patients were performed using LenSx femtosecond laser device (Alcon, Forthworth, US) and its results were compared with the CCC digital guided carried out in 40 eyes of 40 patients using the Callisto Eye digital image system (Zeiss, Germany). Capsulorhexis circularity, shape and capsule overlap were measured using Adobe Photoshop (Adobe Systems Inc.) and postoperative refraction outcomes were evaluated in both groups. Results: Highly accurate and predictable capsulotomy diameter, size and shape were achieved with femtosecond laser capsulotomy compared with capsulorhexis and showed statistical difference between groups. Spherical equivalent comparison between groups showed no statistical difference.

show abstract

A capsulotomia descontínua durante a facoemulsificação

Cited by 3 publications

References 6 publications

Phacoemulsification associated with loss of endothelial cells in cataract surgery: a systematic review of main surgical techniques

Phacoemulsification associated with loss of endothelial cells in cataract surgery: a systematic review of main surgical techniques

V-Prechop nucleodissection technique feasibility in the phacoemulsification in dogs with cataracts. Clinical aspects and specular microscopy

Comparison between femtosecond laser capsulotomy and manual continuous curvilinear digital image guided capsulorrhexis

Contact Info

Product

Resources

About