Rhythm of 24-h Intraocular and Perfusion Pressure in Patients With Ocular Hypertension

2020 ◽  
Author(s):  
Ran Xia ◽  
Na Shu ◽  
Huixian Cui ◽  
JORGE AGUSTÍN TRUJILLO PERDOMO ◽  
Hong Zhang ◽  
...  
Keyword(s):  
Ocular Hypertension ◽  
Perfusion Pressure ◽  
Open Angle Glaucoma ◽  
Healthy Control Group ◽  
Control Group ◽  
Ocular Perfusion Pressure ◽  
Control Groups ◽  
Ocular Perfusion ◽  
Healthy Control ◽  
Maximum Minimum

Abstract AIMThe aim of the present study was to characterize the rhythm of 24-h intraocular pressure (IOP) and ocular perfusion pressure (OPP) in patients with ocular hypertension (OHTN), in order to provide a reference for the clinical diagnosis and treatment of OHTN. METHODSAccording to the diagnostic criteria, 107 patients with OHTN were included, and an age- and sex-matched healthy control group (71 patients) was selected. The IOP and blood pressure (BP) of the OHTN and the healthy control groups were recorded every 2 h over a 24-h period. BP was measured using a digital automatic BP monitor, and IOP was measured using a non-contact tonometer. RESULTSThe maximum, minimum and mean IOP were significantly higher in subjects with OHTN than in the healthy control group (P<0.05), and the maximum, minimum and mean MOPP were significantly lower in the OHTN group than in the healthy control group (P<0.05). The minimum and mean SOPP and DOPP values of the OHTN group were lower than those of the healthy control group (P<0.05), and the IOP, MOPP, SOPP and DOPP diurnal and nocturnal fluctuation values were significantly greater in the OHTN group than in the healthy control group (P<0.05). The peak and trough IOP times of the two groups coincided, which tended to be low during the day and higher at night. The peak and trough MOPP and SOPP times of the two groups also coincided, and were primarily higher during the day and lower at night. The 24-h DOPP in the healthy control group was generally higher during the daytime and lower at night, with peak values between 19:00-23:00 h, and trough values between 3:00-7:00 h. No obvious day-to-night fluctuations were observed in the OHTN group. CONCLUSIONThe OPP of patients with OHTN is lower, and the 24-h OPP fluctuates more than that of healthy control subjects. This may be an important blood flow factor for the progression to primary open angle glaucoma in patients with OHTN.

scholarly journals Effect of mean ocular perfusion pressure on primary open angle glaucoma

2018 ◽  
Vol 11 (4) ◽  
pp. 286-290
Author(s):  
Pallab Kumar Sen ◽  
Nazneen Khan ◽  
Md. Shafiqul Islam
Keyword(s):  
Odds Ratio ◽  
Primary Open Angle Glaucoma ◽  
Perfusion Pressure ◽  
Open Angle Glaucoma ◽  
Control Group ◽  
Open Angle ◽  
Ocular Perfusion Pressure ◽  
Ocular Perfusion ◽  
The Mean ◽  
The Right

Primary open angle glaucoma is the most common form of glaucoma and it remains asymptomatic until the late stage of the disease. The purpose of this study is to compare the mean ocular perfusion pressure with the primary open angle glaucoma. A total of 60 study subjects were divided into two following groups: a) newly diagnosed patients with primary open angle glaucoma (case) and b) age and sex-matched healthy volunteers (control). The intraocular pressure and blood pressure were measured 3 hourly from 8:00 am to 11:00 pm. The mean ocular perfusion pressure of the right eyes in untreated primary open angle glaucoma was 39.9 ± 7.5 mm Hg whereas it was 47.7 ± 7.7 mm Hg in the control. The odds ratio was 6.6 (95% CI, 2.1-20.5; p=0.002). The right eyes of untreated primary open angle glaucoma had 6.6 times more risk compared to the control group. The mean ocular perfusion pressure of left eyes in untreated primary open angle glaucoma was 39.9 ± 7.5 mm Hg and 48.6 ± 4.0 mm Hg in the control group. The odds ratio was 5.7 (95% CI, 1.8-17.5; p=0.004). The left eyes of untreated primary open angle glaucoma had 5.7 times more risk compared to control group. The findings revealed the evidence of vascular mechanism in glaucoma pathogenesis: Reduction of mean ocular perfusion pressure ≤48 mm Hg, may lead to daily repetitive ischemic insult to the optic nerve.

scholarly journals Correlation of open-angle glaucoma and ocular perfusion pressure in hypertensive individuals

2020 ◽  
Vol 8 (1) ◽  
pp. 5
Author(s):  
Rekha Khandelwal ◽  
Rachit Khandelwal ◽  
Dhananjay Raje ◽  
Deepa Kumar ◽  
Anand Rathi
Keyword(s):  
Perfusion Pressure ◽  
Open Angle Glaucoma ◽  
Open Angle ◽  
Ocular Perfusion Pressure ◽  
Ocular Perfusion

Ocular perfusion pressure - a risk factor for open-angle glaucoma or a statistical artifact?

2012 ◽  
Vol 90 ◽  
pp. 0-0
Author(s):  
NM JANSONIUS ◽  
WD RAMDAS ◽  
RCW WOLFS ◽  
A HOFMAN ◽  
PTVM DE JONG ◽  
...  
Keyword(s):  
Risk Factor ◽  
Perfusion Pressure ◽  
Open Angle Glaucoma ◽  
Open Angle ◽  
Ocular Perfusion Pressure ◽  
Ocular Perfusion ◽  
Statistical Artifact

scholarly journals Author Response: Incident Open-Angle Glaucoma and Ocular Perfusion Pressure

2012 ◽  
Vol 53 (1) ◽  
pp. 150
Author(s):  
Wishal D. Ramdas ◽  
Roger C. W. Wolfs ◽  
Albert Hofman ◽  
Paulus T. V. M. de Jong ◽  
Johannes R. Vingerling ◽  
...  
Keyword(s):  
Perfusion Pressure ◽  
Open Angle Glaucoma ◽  
Author Response ◽  
Open Angle ◽  
Ocular Perfusion Pressure ◽  
Ocular Perfusion

scholarly journals Circadian Variation of Ocular Perfusion Pressure in Primary Open Angle Glaucoma- A Cross-sectional Study

2021 ◽  
Author(s):  
Raheeba Pakeer Muhammed ◽  
Neeta Sidhan ◽  
Beena Thankappan
Keyword(s):  
Primary Open Angle Glaucoma ◽  
Perfusion Pressure ◽  
Open Angle Glaucoma ◽  
Circadian Variation ◽  
Cross Sectional Study ◽  
Open Angle ◽  
Sectional Study ◽  
Ocular Perfusion Pressure ◽  
Cross Sectional ◽  
Ocular Perfusion

Introduction: Various haemodynamic factors have been implicated as pathophysiological mechanisms in Primary Open Angle Glaucoma (POAG) other than raised Intraocular Pressure (IOP). However, the exact relationship still remains unclear. Aim: To examine the circadian pattern of Blood Pressure (BP), IOP and Ocular Perfusion Pressure (OPP) with the aim of understanding their relationships in a cohort of patients with POAG. Materials and Methods: A cross-sectional study was conducted in which 44 cases of newly diagnosed, non-hypertensive patients with POAG were enrolled and categorised based on the severity of glaucoma. Recording of BP and IOP were done every 4th hourly during a 24 hour hospital stay. The Mean OPP (MOPP) was calculated as 2/3×Mean Arterial Pressure (MAP)-IOP. Systolic OPP (SOPP) was calculated as Systolic BP-IOP and Diastolic OPP (DOPP) was calculated as Diastolic BP-IOP. The diurnal, nocturnal and 24 hour fluctuations were derived from the difference between the highest and lowest values within each period. Data was analysed using Statistical Package for the Social Sciences (SPSS) version 16.0. Univariate and multivariate regression analysis of the variables with age and severity of POAG were performed Results: Significant positive correlation of the nocturnal fluctuations in MAP (r=0.533), SOPP (r=0.835), DOPP (r =0.768), MOPP (r=0.685) and 24 hour fluctuation in MOPP (r=0.636) were noted with severity of glaucoma on multivariate analysis. No significant correlation of these parameters with age was noted on multivariate analyses. Conclusion: Nocturnal dip in OPP was an important observation among patients with POAG, potentially contributing to its pathophysiology.

Topical medical therapy and ocular perfusion pressure in open angle glaucoma: a systematic review and meta-analysis

2019 ◽  
Vol 35 (8) ◽  
pp. 1421-1431 ◽  
Author(s):  
George Rennie ◽  
Angus Wilkinson ◽  
Andrew White ◽  
Marinella Ruospo ◽  
Armando Teixeira-Pinto ◽  
...  
Keyword(s):  
Systematic Review ◽  
Medical Therapy ◽  
Perfusion Pressure ◽  
Open Angle Glaucoma ◽  
Meta Analysis ◽  
Open Angle ◽  
Ocular Perfusion Pressure ◽  
Ocular Perfusion

Correlation between ocular perfusion pressure and translaminar pressure difference in glaucoma: Evidence for a three-pressure disease?

2020 ◽  
pp. 112067212096058
Author(s):  
Mateus L Matuoka ◽  
Katia S Santos ◽  
Natasha FS Cruz ◽  
Niro Kasahara
Keyword(s):  
Negative Correlation ◽  
Pressure Difference ◽  
Perfusion Pressure ◽  
Open Angle Glaucoma ◽  
Linear Regression Analysis ◽  
Normal Subjects ◽  
Cross Sectional Study ◽  
Ocular Perfusion Pressure ◽  
Cross Sectional ◽  
Ocular Perfusion

Aim: To evaluate the correlation between the translaminar pressure difference (TLPD) and the ocular perfusion pressure (OPP) in glaucoma patients. Methods: This was a cross-sectional study. Primary open-angle glaucoma (POAG) patients and normal individuals underwent an ophthalmic evaluation as well as blood pressure, height, and weight measurements. Intracranial pressure (ICP) and OPP were calculated using proxy mathematical formulas to attain indirect surrogate parameter values. The TLPD was calculated as intraocular pressure minus ICP. The association between the variables was evaluated using linear and non-linear regression analysis and the correlation estimated with Pearson’s correlation coefficient. Results: The sample included 50 POAG patients and 25 normal subjects. The mean OPP for all 75 subjects (75 eyes) was 53.1 ± 9.3 mmHg and the calculated TLPG was 3.1 ± 4.2 mmHg. TLPG showed a negative correlation with OPP ( r = −0.580; 95% CI, −0.690 to −0.366; p < 0.0001). Conclusion: The negative correlation between OPP and TLPD observed in the study substantiates the concept of glaucoma as a three-pressure disease.

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