Recent Advances and History of Vitreous Surgery

Mimura, Tatsuya; Nakashizuka, Takayuki; Mori, Mikiro

doi:10.1260/2040-2295.2.4.447

Cited by 3 publications

(3 citation statements)

References 52 publications

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“…Until quite recently, pneumatic cutters employed a single pneumatic pulse from a pneumatic energy source located in the machine to close the cutter guillotine blade and relied on a spring to open it to complete a duty cycle. Pneumatic cutters were smaller and lighter, but as the mechanical properties of the spring remain constant, as the cut rate increased, the inability of the spring to keep up with the pneumatically driven closure increased the time the port is closed, thereby decreasing the duty cycle [ 46 ].…”

Section: Fluidics Of Vitrectomymentioning

confidence: 99%

Review of Small Gauge Vitrectomy: Progress and Innovations

Mohamed

Claes

Tsang

2017

Journal of Ophthalmology

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Purpose. To summarise the surgical advances and evolution of small gauge vitrectomy and discuss its principles and application in modern vitreoretinal surgery. The advent of microincisional vitrectomy systems (MIVS) has created a paradigm shift away from twenty-gauge vitrectomy systems, which have been the gold standard in the surgical management of vitreoretinal diseases for over thirty years. Advances in biomedical engineering and surgical techniques have overcome the technical hurdles of shifting to smaller gauge instrumentation and sutureless surgery, improving surgical capabilities and expanding the indications for MIVS.

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Section: Fluidics Of Vitrectomymentioning

confidence: 99%

Review of Small Gauge Vitrectomy: Progress and Innovations

Mohamed

Claes

Tsang

2017

Journal of Ophthalmology

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“…Given the continuous evolution of PPV techniques and instrumentation since the early 1970s, we chose to limit our study selection to those conducted from the year 2000 onward. 11 This choice aimed to ensure that this systematic review aligns with contemporary PPV practices and outcomes.…”

Section: Methodsmentioning

confidence: 99%

Surgical drainage methods during pars plana vitrectomy for rhegmatogenous retinal detachment: a systematic review and meta-analysis

Grad,

Hatamnejad,

Huan

et al. 2024

Retina

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Purpose: To assess efficacy and safety outcomes of subretinal fluid drainage methods during pars plana vitrectomy (PPV) for rhegmatogenous retinal detachment (RRD). Methods: A systematic search strategy was conducted of studies published between January 2000 and October 2022. Included studies reported on either the safety or efficacy of two or more drainage methods during PPV for RRD patients. Results: Two randomized and five observational studies consisting of 1524 eyes were included. Best corrected visual acuity at last study observation and primary reattachment rate were similar across groups. A significantly lower risk of epiretinal membrane formation (ERM) was associated with draining subretinal fluid through pre-existing retinal breaks (PRB) (RR= 0.70, 95% CI=[0.60, 0.83], p=<0.01, I2=0%) or with perfluorocarbon liquid (PFCL) (RR=0.70, 95% CI=[0.59, 0.83], p=<0.01, I2=0%) compared to posterior retinotomy (PR). The risk of an abnormal foveal contour was significantly greater in PFCL-treated eyes relative to PR (RR=1.56, 95% CI=[1.13, 2.17], p=<0.01, I2=0%). Conclusions: No significant differences were observed in final BCVA at last study observation and primary reattachment rates across different drainage methods. There remains limited information on the topic and future research is warranted.

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“…For example, the vitreous cutter used in 27-gauge (27G) vitrectomy was expected to present problems like reduced surgical efficiency and shaft stiffness. However, the vitrectomy efficiency improved dramatically by changing the drive system of the vitrectomy machine 3,4 and by developing a bi-blade vitreous cutter 5,6 . Although the debate on shaft stiffness is still ongoing, an increasing number of reports have found that these instruments pose no problem in surgical procedures [7][8][9][10][11] .…”

Section: Impact Of Different Manufacturers and Gauge Sizes On The Permentioning

confidence: 99%

Impact of different manufacturers and gauge sizes on the performance of backflush needle

Imai

Tetsumoto

Yamada

et al. 2020

Sci Rep

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The present study aimed to identify the factors regulating aspiration rate (AR) of backflush needles and to compare those factors across various backflush needles from different manufacturers. The 27-gauge (27G), 25-gauge, and 23-gauge backflush needles from four different manufacturers, Alcon, MedOne, VitreQ, and DORC, were used for this experiment. AR was measured at four different aspiration vacuum levels: 100, 200, 400, and 650 mmHg. AR was significantly increased as the aspiration vacuum level increased when both aspirating balanced salt solution (BSS) and ethylene glycol; however, 27G products from VitreQ and MedOne were unable to aspirate ethylene glycol at the low aspiration vacuum level of 100 mmHg. When aspirating BSS at the high aspiration vacuum level of 650 mmHg, a smaller gauge number generally resulted in a significantly higher AR. AR, inner diameter, and cross-sectional area in Alcon products were significantly larger in any gauge, and the shaft length of Alcon products was significantly shorter than those of other manufacturers’ products in any gauge. Cross-sectional area negatively correlated with the degree of shaft deflection (r2 = 0.21, p = 0.042). These results imply that AR differs significantly among backflush needles and among companies depending on the shaft cross-sectional area.

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Recent Advances and History of Vitreous Surgery

Cited by 3 publications

References 52 publications

Review of Small Gauge Vitrectomy: Progress and Innovations

Review of Small Gauge Vitrectomy: Progress and Innovations

Surgical drainage methods during pars plana vitrectomy for rhegmatogenous retinal detachment: a systematic review and meta-analysis

Impact of different manufacturers and gauge sizes on the performance of backflush needle

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