Ocular Pulse Amplitude Before and After Cataract Surgery

Plange, Niklas; Rennings, Corinna; Herr, Anne; Weber, Anke; Roessler, Gernot; Mazinani, Babac; Kaup, M.; Remky, Andreas

doi:10.3109/02713683.2011.626910

Cited by 12 publications

(8 citation statements)

References 30 publications

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“…This phenomenon was basically consistent with the conclusions of our large-sample study. Previous studies have pointed out that fundus perfusion will eventually improves due to the IOP-lowering effect of cataract surgery, resulting from the widening of the anterior chamber [20][21][22][23]. This nding is consistent with the current study since patients' IOP decreased signi cantly at 1 week after the surgery.…”

Section: Discussionsupporting

confidence: 92%

Optical coherence tomography angiography evaluation of the effects of phacoemulsification cataract surgery on macular hemodynamics in Chinese normal eyes

Jia

Wei

Song

2020

Preprint

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Background: To quantitatively evaluate the possible effects of phacoemulsification cataract surgery on macular hemodynamics using optical coherence tomography angiography (OCTA). Methods: This was a prospective observational study. Superficial and deep macular vascular densities, as well as parameters of foveal avascular zone (FAZ), were measured preoperatively (baseline) and at 1 day, 1 week, and 4 weeks postoperatively in normal eyes (≥22 mm and ≤24 mm) of patients scheduled for phacoemulsification cataract surgery with intraocular lens implantation. The correlations between the rate of change of pre- and post-operative vascular densities and surgical parameters were analyzed. Results: A total of 123 eyes of 107 patients were included in this study. Compared to the baseline measurements, no statistically significant variation was found in macular vascular densities at 1 day after the surgery (P>0.05). Both superficial and deep macular vascular densities were significantly increased postoperatively at weeks 1 and week 4 (P<0.05; P<0.05), however no statistically significant differences were detected in any of the FAZ parameters between the baseline measurements and the entire follow-up period (P>0.05 for all). Also, no statistically significant correlations were established between main surgical parameters and macular vascular densities changes. Conclusions: In normal eyes, macular blood perfusion gradually increased after phacoemulsification cataract surgery and was stabilized in one week. The foveal avascular zone was stabilized before and after the surgery. The main parameters and intraoperative perfusion of phacoemulsification surgery may not be the key factors affecting macular hemodynamics.

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Section: Discussionsupporting

confidence: 92%

Optical coherence tomography angiography evaluation of the effects of phacoemulsification cataract surgery on macular hemodynamics in Chinese normal eyes

Jia

Wei

Song

2020

Preprint

View full text Add to dashboard Cite

show abstract

“…This is basically consistent with the conclusions of our larger sample study. Previous studies have pointed out that fundus perfusion will eventually improve due to the IOP-lowering effect of cataract surgery, which is believed to result from the widening of the anterior chamber [20][21][22][23]. This is consistent with our research since patients' IOP decreased signi cantly one week after surgery.…”

Section: Discussionsupporting

confidence: 91%

Optical coherence tomography angiography evaluation of the effects of phacoemulsification cataract surgery on macular hemodynamics in Chinese normal eyes

Jia

Wei

Song³

2020

Preprint

View full text Add to dashboard Cite

Background：To quantitatively evaluate the possible effects of phacoemulsification cataract surgery on macular hemodynamics using optical coherence tomography angiography (OCTA).Methods：Prospective observational study. Superficial and deep macular vascular densities as well as parameters of foveal avascular zone (FAZ) were measured preoperatively (baseline) and at 1 day, 1 week and 4 weeks postoperatively in normal eyes (≥22 mm and ≤24 mm) of patients scheduled for phacoemulsification cataract surgery with intraocular lens implantation. Correlations between the rate of change of pre- and post-operative vascular densities and surgical parameters were analyzed.Results: 123 eyes of 107 patients were recruited. Compared with baseline measurements, no statistically significant variation was found in macular vascular densities of 1 day after surgery (P>0.05). While both superficial and deep macular vascular densities were significantly increased postoperatively on week 1 and week 4 (P<0.05; P<0.05). There were no statistically significant differences in any of the FAZ parameters between the baseline measurements and the entire follow-up period (P>0.05 for all). There were no statistically significant correlations between main surgical parameters and the changes of macular vascular densities.Conclusions: In normal eyes, macular blood perfusion gradually increased after phacoemulsification cataract surgery and was stabilized in one week. Foveal avascular zone was basically stable before and after surgery. Main parameters and intraoperative perfusion of phacoemulsification surgery may not be the key factors affecting macular hemodynamics.

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“…This was attributed to a certain improvement in the patient's autoregulatory capabilities. However, the ocular pulse amplitude is known to be influenced by the level of IOP itself limiting the direct interpretation concerning ocular blood flow …”

Section: Discussionmentioning

confidence: 99%

Long term effect of trabeculectomy on retrobulbar haemodynamics in glaucoma

Kuerten

Fuest

Koch

et al. 2014

Ophthalmic Physiologic Optic

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Ocular Pulse Amplitude Before and After Cataract Surgery

Abstract: The OPA measured with the Pascal(®) device seems to be dependent on IOP changes. Particular caution should be taken in the interpretation of OPA in estimating pulsatile ocular blood flow.

Cited by 12 publications

References 30 publications

Optical coherence tomography angiography evaluation of the effects of phacoemulsification cataract surgery on macular hemodynamics in Chinese normal eyes

Optical coherence tomography angiography evaluation of the effects of phacoemulsification cataract surgery on macular hemodynamics in Chinese normal eyes

Optical coherence tomography angiography evaluation of the effects of phacoemulsification cataract surgery on macular hemodynamics in Chinese normal eyes

Long term effect of trabeculectomy on retrobulbar haemodynamics in glaucoma

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