%0 Journal Article %T Evaluation of the Diurnal Intraocular Pressure Fluctuations and Blood Pressure under Dehydration Due to Fasting %J Journal of Nutrition,Fasting and Health %I Mashhad University of Medical Sciences (MUMS) %Z 2821-2746 %A Baser, Gonen %A Karahan, Eyyup %A Bilgin, Sinan %D 2016 %\ 12/01/2016 %V 4 %N 4 %P 124-129 %! Evaluation of the Diurnal Intraocular Pressure Fluctuations and Blood Pressure under Dehydration Due to Fasting %K autonomic nerve system %K intraocular pressure peaks %K diurnal intraocular pressure, dehydration %R 10.22038/jfh.2016.7888 %X Introduction: This study aimed to investigate the diurnal intraocular pressure fluctuations under dehydration conditions and the relationship between the intraocular pressure fluctuations and blood pressure. Methods: The intraocular pressures (IOP), body weights, as well as systolic and diastolic blood pressures (SBP, DBP) of 36 fasting healthy volunteers were recorded at 8:00 a.m. and 5:00 p.m. in the Ramadan of 2014 and two weeks after it. The data were analyzed using paired Student’s t-test and Pearson correlation analysis. Results: As the results demonstrated, the mean diurnal IOP differences of IOP, SBP, DBP, and weight were 2.67±1.33 mmHg, 9.44±8.02 mmHg, 3.33±5.94 mmHg, and 0.90±0.46 kg during the fasting period, respectively. In addition, the mean diurnal IOP differences of IOP, SBP, DBP, and weight were -0.33±1.4 mmHg (P=0.001), 0.55±7.25mmHg (P=0.003), -3.33±5.94 mmHg (P=0.001), and 0.12±0.45 kg (P=0.001) during the control period, respectively. There was a moderate correlation between the diurnal IOP and SBP differences (r=0.517, P=0.028). Conclusion: Based on the findings of the current study, the total fluid volume might have a more dominant effect on IOP peaks than the sympathetic system activity. Furthermore, the SBP was found to correlate with the IOP. %U https://jnfh.mums.ac.ir/article_7888_26e0b5686da3f224dd136abb3668ed4e.pdf