Cystotome-assisted prechop technique

Chen, Xu; Liu, Baosong; Xiao, Yang; Qi, Yongjun; Xiaojun, Hao; Shi, Lei; Wu, Lianqun

doi:10.1016/j.jcrs.2014.11.015

Cited by 13 publications

(15 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several chopping / pre-chopping techniques have been described that even completely renounce ultra sound energy to crack the nucleus. 11,12 On the one hand these techniques are highly protective for the endothelium, on the other hand, from our own experience, there is a longer learning curve and they become much more difficult to apply in very hard nuclei.…”

Section: Discussionmentioning

confidence: 99%

Aligned chopping for full thickness fragmentation in hard cataracts

Hall¹,

Nath²

2021

IJCEO

View full text Add to dashboard Cite

We describe a horizontal chopping technique to fracture the nucleus using an angled sharp edged chopper, thats enters the anterior chamber through a side port in a 30 • angle to the main incision. Following the capsulorrhexis, the phaco tip is buried into the nucleus centrally, while the surgeon-bent chopper is placed behind the lens on the opposite side of the main incision. When moving the chopper towards the phaco tip, the angle allows a sharp clean cut of the hard nucleus, dividing it in 2 hemispheres and consequently further in smaller fragments.

show abstract

Section: Discussionmentioning

confidence: 99%

Aligned chopping for full thickness fragmentation in hard cataracts

Hall¹,

Nath²

2021

IJCEO

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

“…Some studies have proposed different types of prechopping technique, using 1 or 2 cystotome, 6 , 7 reverse type chopper, 8 and phacoemulsification handpiece as a second chopper. 9 Both middle prechop 6 and 1 cystotome-assisted prechop 7 have a possibility to potential iatrogenic injury during the introduction of the cystotomes through the incision. The main chopping force during middle prechop 6 is towards the posterior capsule and zonule, which can lead to increased posterior capsular rupture and zonular dialysis or zonulopathy.…”

Section: Discussionmentioning

confidence: 99%

A Counter Prechop Technique Using a Modified Universal Prechopper in Combination with or without Using a Universal Chopper

Kim¹,

Jung²,

Inamura³

2022

OPTH

View full text Add to dashboard Cite

Purpose To introduce an alternative prechop technique without or with the use of a modified universal chopper (AE-2591, HI Kim chopper, ASICO, Inc. USA). Methods Patients who underwent cataract surgery using the phaco-chop technique and the modified prechop technique have been grouped and reviewed retrospectively. Endothelial cell count (ECC) and central corneal thickness (CCT) measured 7 days pre-operatively, and 1 month and 3 months post-operatively, were compared between the two groups. In modified prechop technique, a narrow 1.7 mm neck prechopper (AE-4298, HI Kim-Inamura chopper, ASICO, Inc., USA) was used with universal chopper (AE-2591, HI Kim chopper, ASICO, Inc., USA) as an additional device for grade 4 and above cataracts or without it for grade 2 to 3 cataracts. Details of the surgical technique is further described in the Method section. Results A total of 104 eyes in the modified prechop group and 97 eyes in the phaco-chop group were enrolled in the study. Pre-operative nuclear opacity, ECC, and CCT as well as post-operative ECC (absolute value and the loss) and CCT (absolute value and the change) throughout the follow-up between the two groups did not show statistically significant differences. Conclusion Counter prechop technique using the modified prechopper and universal chopper is a safe, easy, and versatile surgical technique that can be applied broadly in a wide range of cases with various complexities, including LOCS lll N1 to N6 nuclei, hypermature cataracts, small pupils, and fragile suspensory zonular ligaments, with post-operative result not inferior to that of the conventional technique.

show abstract

“…Therefore, power-free-chop technique is easier to be learned and controlled compared with phaco-chop and other manual prechop techniques such as cystotome-assisted prechop technique. 12 The power-free-chop technique also has disadvantage. It is effective for soft to moderate nucleus (Emery-Little classification, grade 1 to 3) only.…”

Section: Discussionmentioning

confidence: 99%

Comparison of power-free-chop and phaco-chop techniques for moderate nucleus

Bai

Yao

2020

Preprint

View full text Add to dashboard Cite

Background: To compare intraoperative and postoperative effects of power-free-chop and phaco-chop techniques for moderate nucleus in phacoemulsification sugery. Methods: Sixty patients were evaluated in 2 groups prospectively. The power-free-chop technique was performed in Group 1 (30 eyes) and the phaco-chop technique in Group 2 (30 eyes). There were no significant differerces between these 2 groups. The cumulative dissipated energy (CDE), time to achieve maximum vision, corneal thickness variation, and time to return to the preoperative values were collected. All parameters were statistically compared in these 2 groups by using the chi-square test and the independent-sample t test. Results: The CDE was 5.53±1.92J in Group 1 and 7.02±1.77J in Group 2. After the operation, the mean time to recover to the maximum vision was 2.80±1.42 days in Group 1 and 3.80±1.92 days in Group 2 respectively. The mean postoperative corneal thickness increased 36.9±14.74μm in Group1 and 46.20±20.67μm in Group 2. And the mean time to return to preoperative pachymetry values were 3.73±1.70 days and 4.83±2.11 days, in Group 1 and Group 2 respectively. There were significant differences in these parameters between both groups. Conclusions: The power-free-chop technique had fewer negative effects on the corneal endothelium as less ultrasound power was used for moderate nucleus cases. This can accelerate the functional healing process and the return to preoperative physiologic values.

show abstract

Cystotome-assisted prechop technique

Abstract: No author has a financial or proprietary interest in any material or method mentioned.

Cited by 13 publications

References 8 publications

Aligned chopping for full thickness fragmentation in hard cataracts

Aligned chopping for full thickness fragmentation in hard cataracts

A Counter Prechop Technique Using a Modified Universal Prechopper in Combination with or without Using a Universal Chopper

Comparison of power-free-chop and phaco-chop techniques for moderate nucleus

Contact Info

Product

Resources

About