Optimization of orbital retraction during endoscopic transorbital approach via quantitative measurement of the intraocular pressure - [SevEN 006]
Background: Increased use of the transorbital approach (TOA) warrants greater understanding of the risk of increased intraocular pressure (IOP) and intraorbital pressure (IORP) due to orbital compression. We aimed to investigate the changes in IOP and IORP in response to orbital retraction in TOA and establish a method for the continuous measurement of intraoperative IORP.
Methods: We assessed nine patients who underwent TOA surgery from January 2017 to December 2019, in addition to five cadavers. IORP and IOP were measured using a cannula needle monitor, tonometer, cuff manometer, and micro strain gauge monitor.
Results: In all nine clinical cases and five cadavers, increased physical compression of the orbit increased the IOP and IORP in a curvilinear pattern. In clinical cases, when the orbit was compressed 1.5 cm from the lateral margin in the sagittal plane, the mean IOP and IORP were 25.4±5.2 mmHg and 14±9.2 mmH2O, respectively. The IORP satisfactorily reflected the IOP (Pearson correlation coefficient=0.824, p<0.001).
Conclusion: We measured IOP and IORP simultaneously during orbital compression to gain basic information on pressure changes. In clinical cases, the change in the IOP could be conveniently and noninvasively monitored using continuous IORP measurements.
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Posted 13 Jan, 2021
On 08 Feb, 2021
On 25 Jan, 2021
On 31 Dec, 2020
On 31 Dec, 2020
On 31 Dec, 2020
Posted 22 Dec, 2020
On 22 Dec, 2020
On 21 Dec, 2020
On 21 Dec, 2020
On 21 Dec, 2020
Invitations sent on 28 Oct, 2020
On 28 Oct, 2020
Received 28 Oct, 2020
On 12 Oct, 2020
On 11 Oct, 2020
On 11 Oct, 2020
On 28 Sep, 2020
Received 13 Sep, 2020
Received 13 Sep, 2020
On 24 Aug, 2020
On 24 Aug, 2020
On 16 Aug, 2020
Received 16 Aug, 2020
Invitations sent on 13 Aug, 2020
On 27 Jul, 2020
On 26 Jul, 2020
On 23 Jul, 2020
On 23 Jul, 2020
Optimization of orbital retraction during endoscopic transorbital approach via quantitative measurement of the intraocular pressure - [SevEN 006]
Posted 13 Jan, 2021
On 08 Feb, 2021
On 25 Jan, 2021
On 31 Dec, 2020
On 31 Dec, 2020
On 31 Dec, 2020
Posted 22 Dec, 2020
On 22 Dec, 2020
On 21 Dec, 2020
On 21 Dec, 2020
On 21 Dec, 2020
Invitations sent on 28 Oct, 2020
On 28 Oct, 2020
Received 28 Oct, 2020
On 12 Oct, 2020
On 11 Oct, 2020
On 11 Oct, 2020
On 28 Sep, 2020
Received 13 Sep, 2020
Received 13 Sep, 2020
On 24 Aug, 2020
On 24 Aug, 2020
On 16 Aug, 2020
Received 16 Aug, 2020
Invitations sent on 13 Aug, 2020
On 27 Jul, 2020
On 26 Jul, 2020
On 23 Jul, 2020
On 23 Jul, 2020
Background: Increased use of the transorbital approach (TOA) warrants greater understanding of the risk of increased intraocular pressure (IOP) and intraorbital pressure (IORP) due to orbital compression. We aimed to investigate the changes in IOP and IORP in response to orbital retraction in TOA and establish a method for the continuous measurement of intraoperative IORP.
Methods: We assessed nine patients who underwent TOA surgery from January 2017 to December 2019, in addition to five cadavers. IORP and IOP were measured using a cannula needle monitor, tonometer, cuff manometer, and micro strain gauge monitor.
Results: In all nine clinical cases and five cadavers, increased physical compression of the orbit increased the IOP and IORP in a curvilinear pattern. In clinical cases, when the orbit was compressed 1.5 cm from the lateral margin in the sagittal plane, the mean IOP and IORP were 25.4±5.2 mmHg and 14±9.2 mmH2O, respectively. The IORP satisfactorily reflected the IOP (Pearson correlation coefficient=0.824, p<0.001).
Conclusion: We measured IOP and IORP simultaneously during orbital compression to gain basic information on pressure changes. In clinical cases, the change in the IOP could be conveniently and noninvasively monitored using continuous IORP measurements.
Figure 1
Figure 2
Figure 3
Figure 4