Comparison of intraocular pressure during the application of a liquid patient interface (FEMTO LDV Z8) for femtosecond laser-assisted cataract surgery using two different vacuum levels

Ebner, Martina; Mariacher, Siegfried; Januschowski, Kai; Boden, Katrin; Seuthe, Anna‐Maria; Szurman, Peter

doi:10.1136/bjophthalmol-2016-309890

Cited by 13 publications

(15 citation statements)

References 22 publications

(19 reference statements)

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“…; Ebner et al. ). The adjustable vacuum of the VICTUS femtosecond laser platform ranged from 350 to 550 mbar.…”

Section: Discussionmentioning

confidence: 97%

“…; Ebner et al. ) In addition, the impact of the preoperative baseline pressure on IOP rise during surgery remains unclear. To the best of our knowledge, this is the first study investigating IOP during vacuum application using different preoperative baseline IOP levels.…”

Section: Discussionmentioning

confidence: 99%

“…; Ebner et al. ,). The suction ring of the Patient Interface 125 of the VICTUS femtosecond laser platform (Bausch & Lomb, Technolas Perfect Vision GmbH, Germany) was applied after the eyes were positioned in a polypropylene container (Sarstedt Container sterile 100 ml, Sarstedt, Germany) in supine direction.…”

Section: Methodsmentioning

confidence: 97%

“…Each ex vivo porcine model was connected to the set‐up via a 20‐gauge cannula (Sterican 20 Gauge Cannula, B. Braun, Melsungen, Germany), and the cannula was inserted into the anterior chamber based on the experimental set‐up of a previously published porcine ex vivo model (Ebner et al. ). The cannula was positioned inside the anterior chamber by a lamellar incision via the corneal apex using the same needle in order to prevent any leakage.…”

Section: Methodsmentioning

confidence: 99%

“…; Ebner et al. ), but to the best of our knowledge, there is only little known about the effect of the initial baseline IOP on IOP during surgery.…”

Section: Introductionmentioning

confidence: 99%

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Preoperative intraocular pressure as a strong predictive factor for intraocular pressure rise during vacuum application in femtosecond laser‐assisted cataract surgery

Mariacher

Laubichler

Wendelstein

et al. 2019

Acta Ophthalmologica

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Purpose: To evaluate the effect of preoperative intraocular pressure (IOP) and the vacuum level on IOP during femtosecond laser-assisted cataract surgery. Methods: Intraocular pressure was measured in 40 enucleated porcine eyes by intracameral manometry prior, during and after vacuum application using the VICTUS femtosecond laser platform (Bausch&Lomb, Technolas Perfect Vision GmbH, Germany). Twenty combinations of different preoperative IOP levels (12, 16, 20 and 24 mmHg) and different vacuum levels (350-550 mbar) were investigated. Results: Multivariate regression analysis indicated that both the vacuum level (beta = 0.138; p < 0.001) but much stronger the preoperative IOP (beta = 0.861; p < 0.001) were predictive factors for IOP rise during vacuum application. Mean IOP was 28.23 AE 3.86, 34.23 AE 3.92, 40.35 AE 4.41 and 46.82 AE 4.11 mmHg in groups with baseline IOP of 12, 16, 20 and 24 mmHg, respectively. In the 350, 450 and 550 mbar group, and mean IOP was 35.85 AE 7.85, 37.33 AE 7.90 and 39.00 AE 8.04 mmHg, respectively. Lowering the preoperative IOP by 2 mmHg and reducing the vacuum from maximum to minimum resulted in a similar reduction in IOP during vacuum application (À3.10 AE 0.79 mmHg versus À3.15 AE 0.88 mmHg; p = 0.015). Furthermore, decreasing the baseline IOP from 20 to 12 mmHg resulted in a 30.0% reduction in intraoperative IOP. Conclusion: Preoperative IOP was a stronger predictive factor for intraoperative IOP rise than the applied vacuum level. Measurements and critical interpretation of preoperative IOP in a preliminary examination could help estimating the individual risk of significant IOP rise during femtosecond laser-assisted cataract surgery and could help taking early countermeasures in selected cases. Due to the porcine ex vivo model, further studies are needed to verify these findings.

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“…; Ebner et al. ). The adjustable vacuum of the VICTUS femtosecond laser platform ranged from 350 to 550 mbar.…”

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

“…; Ebner et al. ), but to the best of our knowledge, there is only little known about the effect of the initial baseline IOP on IOP during surgery.…”

Section: Introductionmentioning

confidence: 99%

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