Impact of dehydration and fasting on intraocular pressure and corneal biomechanics measured by the Ocular Response Analyzer

Uysal, Betül Seher; Duru, Necati; Ozen, Umut; Yorgun, Mücella Arıkan; Akçay, Emine; Çağlayan, Mehtap; Çağıl, Nurullah

doi:10.1007/s10792-017-0479-5

Cited by 15 publications

(12 citation statements)

References 30 publications

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“…52 Uysal et al have demonstrated that fasting did not affect IOP and corneal biomechanics valueson a Caucasian population with glaucoma. 53 Reduction in water intake following aqueous humor formation may affect prostaglandin secretion and IOP reduction. Furthermore, alteration of α-adrenergic tone due to activation of sympathetic system may increase outflow resistance and subsequent IOP changes.…”

Section: Fastingmentioning

confidence: 99%

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Effect of dietary modification and antioxidant supplementation on intraocular pressure and open-angle glaucoma

Jabbehdari

Chen

Vajaranant

2020

European Journal of Ophthalmology

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Primary open-angle glaucoma (POAG) is an age-dependent, intraocular pressure (IOP)-related degeneration of the retinal ganglion cells (RGC). At present, IOP is the only modifiable factor that has been identified to prevent glaucomatous vision loss. Though the pathogenesis of glaucomatous optic neuropathy is still not well understood, increasing evidence suggests oxidative stress may contribute to the induction and progression of glaucoma. Furthermore, antioxidant use may be protective against glaucoma through various mechanisms, including reducing IOP, preserving vascular health, and preventing ganglion cell loss. This article provides a comprehensive review of the effect of oxidative stress, diet, and antioxidant therapy on IOP and open-angle glaucoma.

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Section: Fastingmentioning

confidence: 99%

“…Furthermore, alteration of α-adrenergic tone due to activation of sympathetic system may increase outflow resistance and subsequent IOP changes. 53 Though, further studies still need to determine mechanism of IOP changes in different ethnicities and confirm the exact mechanism of fasting.…”

Section: Fastingmentioning

confidence: 99%

Effect of dietary modification and antioxidant supplementation on intraocular pressure and open-angle glaucoma

Jabbehdari

Chen

Vajaranant

2020

European Journal of Ophthalmology

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“…The corneal resistance factor (CRF) captures the overall viscoelastic behavior of the cornea [10]. The correction of IOP according to CH could reduce the measurement of IOP by corneal factors, that is, Corneal-Compensated Intraocular Pressure (IOPcc) [11]. IOPcc is claimed to measure IOP independent of CCT and takes certain biomechanical properties of cornea into account.…”

Section: Introductionmentioning

confidence: 99%

Comparison of intraocular pressure measured by ocular response analyzer and Goldmann applanation tonometer after corneal refractive surgery: a systematic review and meta-analysis

Zhang

Sun

et al. 2020

BMC Ophthalmol

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Background Accurate measurement of intraocular pressure (IOP) after corneal refractive surgery is of great significance to clinic, and comparisons among various IOP measuring instruments are not rare, but there is a lack of unified analysis. Although Goldmann Applanation Tonometer (GAT) is currently the internationally recognized gold standard for IOP measurement, its results are severely affected by central corneal thickness (CCT). Ocular Response Analyzer (ORA) takes certain biomechanical properties of cornea into account and is supposed to be less dependent of CCT. In this study, we conducted the meta-analysis to systematically assess the differences and similarities of IOP values measured by ORA and GAT in patients after corneal refractive surgery from the perspective of evidence-based medicine. Methods The authors searched electronic databases (MEDLINE, EMBASE, Web of science, Cochrane library and Chinese electronic databases of CNKI and Wanfang) from Jan. 2005 to Jan. 2019, studies describing IOP comparisons measured by GAT and ORA after corneal refractive surgery were included. Quality assessment, subgroup analysis, meta-regression analysis and publication bias analysis were applied in succession. Results Among the 273 literatures initially retrieved, 8 literatures (13 groups of data) with a total of 724 eyes were included in the meta-analysis, and all of which were English literatures. In the pooled analysis, the weighted mean difference (WMD) between IOPcc and IOPGAT was 2.67 mmHg (95% CI: 2.20~3.14 mmHg, p < 0.0001), the WMD between IOPg and IOPGAT was − 0.27 mmHg (95% CI: − 0.70~0.16 mmHg, p = 0.2174). In the subgroup analysis of postoperative IOPcc and IOPGAT, the heterogeneity among the data on surgical procedure was zero, while the heterogeneity of other subgroups was still more than 50%. The comparison of the mean difference of pre- and post-operative IOP (∆IOP) was: mean-∆IOPg > mean-∆IOPGAT > mean-∆IOPcc. Conclusions IOPcc, which is less dependent on CCT, may be more close to the true IOP after corneal refractive surgery compared with IOPg and IOPGAT, and the recovery of IOPcc after corneal surface refractive surgery may be more stable than that after lamellar refractive surgery.

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“…The correction of IOP according to CH could reduce the measurement of IOP by corneal factors, that is, Corneal-Compensated Intraocular Pressure (IOPcc) [7,8] .…”

Section: Introductionmentioning

confidence: 99%

Comparison of intraocular pressure measured by ocular response analyzer and Goldmann applanation tonometer after corneal refractive surgery: a systematic review and meta-analysis

Zhang

Sun

et al. 2019

Preprint

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Background: Accurate measurement of intraocular pressure (IOP) after corneal refractive surgery is of great significance to clinic, and comparisons among various IOP measuring instruments are not rare, but there is a lack of unified analysis. GAT is currently the internationally recognized gold standard for IOP measurement, while ORA is said to take into account the biomechanical properties of cornea. In this study, we conducted this meta-analysis to systematically assess the differences and similarities of IOP values measured by ORA and GAT in patients after corneal refractive surgery from the perspective of evidence-based medicine. Methods: The authors searched electronic databases (MEDLINE, EMBASE, Web of science, Cochrane library and Chinese electronic databases of CNKI and Wanfang) from Jan 2005 to Jan 2019, studies describing IOP comparisons measured by GAT and ORA after corneal refractive surgery were included. Quality assessment, subgroup analysis, meta-regression analysis and publication bias analysis were applied in succession. Results: Among the 273 literatures initially retrieved, 8 literatures (13 groups of data) with a total of 724 eyes were included in the meta-analysis, and all of which were English literatures. In the pooled analysis, the weighted mean difference (WMD) between IOPcc and IOPGAT was 2.67 mmHg (95% CI: 2.20~3.14 mmHg, p < 0.0001), the WMD between IOPg and IOPGAT was -0.27 mmHg (95% CI: -0.70~0.16 mmHg, p = 0.2174). In the subgroup analysis of postoperative IOPcc and IOPGAT, the heterogeneity among the data on surgical procedure was zero, while the heterogeneity of other subgroups was still more than 50%. The comparison of mean-∆IOP is: mean-∆IOPg > mean-∆IOPGAT > mean-∆IOPcc. Conclusions: IOPcc may be more close to the true IOP after corneal refractive surgery compared with IOPg and IOPGAT, and the recovery of IOPcc after corneal surface refractive surgery may be more stable than that after lamellar refractive surgery. Keywords: corneal refractive surgery; intraocular pressure; ocular response analyzer; Goldmann applanation tonometer; meta-analysis;

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Impact of dehydration and fasting on intraocular pressure and corneal biomechanics measured by the Ocular Response Analyzer

Cited by 15 publications

References 30 publications

Effect of dietary modification and antioxidant supplementation on intraocular pressure and open-angle glaucoma

Effect of dietary modification and antioxidant supplementation on intraocular pressure and open-angle glaucoma

Comparison of intraocular pressure measured by ocular response analyzer and Goldmann applanation tonometer after corneal refractive surgery: a systematic review and meta-analysis

Comparison of intraocular pressure measured by ocular response analyzer and Goldmann applanation tonometer after corneal refractive surgery: a systematic review and meta-analysis

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