Effects of fasting on intraocular pressure in a black population

Hassan, Mustapha B; Isawumi, Michaeline A

doi:10.4103/0974-9233.142271

Cited by 8 publications

(6 citation statements)

References 7 publications

(12 reference statements)

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“…The average correlation coefficient from these publications was then used to calculate the standard deviation of change for all studies in the analyses. For weight, there were five relevant publications that reported the standard deviation of the change between pre-R and post-R [ 22 , 23 , 24 , 25 , 26 ], while standard deviations of change of other variables of interest, that is, fat percentage, absolute fat mass and fat-free mass, were found within two publications [ 24 , 26 ] between pre-R and post-R. The standard deviation between pre-R and follow-up were found in only one publication [ 24 ].…”

Section: Methodsmentioning

confidence: 99%

Effect of Ramadan Fasting on Weight and Body Composition in Healthy Non-Athlete Adults: A Systematic Review and Meta-Analysis

et al. 2019

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Background: Ramadan involves one month of fasting from sunrise to sunset. In this meta-analysis, we aimed to determine the effect of Ramadan fasting on weight and body composition. Methods: In May 2018, we searched six databases for publications that measured weight and body composition before and after Ramadan, and that did not attempt to influence physical activity or diet. Results: Data were collected from 70 publications (90 comparison groups, 2947 participants). There was a significant positive correlation between starting body mass index and weight lost during the fasting period. Consistently, there was a significant reduction in fat percentage between pre-Ramadan and post-Ramadan in people with overweight or obesity (−1.46 (95% confidence interval: −2.57 to −0.35) %, p = 0.010), but not in those of normal weight (−0.41 (−1.45 to 0.63) %, p = 0.436). Loss of fat-free mass was also significant between pre-Ramadan and post-Ramadan, but was about 30% less than loss of absolute fat mass. At 2–5 weeks after the end of Ramadan, there was a return towards, or to, pre-Ramadan measurements in weight and body composition. Conclusions: Even with no advice on lifestyle changes, there are consistent—albeit transient—reductions in weight and fat mass with the Ramadan fast, especially in people with overweight or obesity.

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Section: Methodsmentioning

confidence: 99%

Effect of Ramadan Fasting on Weight and Body Composition in Healthy Non-Athlete Adults: A Systematic Review and Meta-Analysis

et al. 2019

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“…In a study conducted by Hassan and co-authors, the mean age of fasting subject was 42.3 ± 16.7 years. 16 In another study done by Assadi et al mean age of fasting subjects was 40.7±7.1 years. 9 In our study mean intraocular pressure in male subjects was 14.36 ± 2.86 mm Hg in right eye and 14.10 ± 2.70 mm Hg in left eye before Ramadan, while mean intraocular pressure was 13.29 ± 2.84 mm Hg in right eye and 13.10 ± 2.68 mm Hg in left eye during Ramadan.…”

Section: Discussionmentioning

confidence: 91%

“…Due to a change in dietary habits during fasting, IOP may be affected. 16 This study was conducted to know the effect of fasting on intraocular pressure of the population of a particular region. This knowledge will help us in answering the question of people regarding the effect of Ramadan on ocular health.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fasting on Intraocular Pressure

Kamal¹,

Jamil²,

Khalid³

et al. 2020

pak J Ophthalmol

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Purpose: To determine the effect of fasting on intraocular pressure in fasting individuals. Study Design: Cross sectional observational study. Place and Duration of Study: District Headquarter Teaching Hospital/Sahiwal Medical College Sahiwal, from April 2020 to May 2020. Methods: Four hundred eyes of two hundred healthy fasting subjects were included in this study. Intraocular pressure was measured one week before and during the second week of Ramadan. t-test was used to calculate the difference of means of intraocular pressure one week before and during the second week of Ramadan. Results: Mean age of the subjects was 34.56 ± 12.52 years. IOP in male subjects before and during Ramadan was 14.23 mmHg and 13.20 mmHg respectively, while IOP in female subjects before and during Ramadan was 14.43 mmHg and 13.20 mmHg respectively. Before Ramadan mean intraocular pressure in the right eye was 14.38 ± 3.00 mmHg and in the left eye was 14.21 ± 2.79 mmHg. During Ramadan mean intraocular pressure in the right eye was 13.24 ± 2.87 mmHg and in the left eye was 13.15 ± 2.71 mmHg. t-test indicated that the difference in means of intraocular pressure for right eye one week before and during the second week of Ramadan was 25.74 (p = 0.000). Similarly, the difference in means of intraocular pressure for left eye one week before and during the second week of Ramadan was 41.54 (p = 0.000). Conclusion: Fasting results in a decrease in intraocular pressure in normal population. There was no difference in intraocular pressure changes between male and female subjects. Intraocular Pressure was higher in older age group in both genders. Key Words: Intraocular Pressure, Tonometry, Glaucoma.

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“…Specifically, Hassan et al demonstrated a significantly lower IOP after fasting among a healthy group of African-Americans. 52 The possible mechanism for IOP reduction might be due to dehydration effects of fasting. 52 Uysal et al have demonstrated that fasting did not affect IOP and corneal biomechanics valueson a Caucasian population with glaucoma.…”

Section: Fastingmentioning

confidence: 99%

“…52 The possible mechanism for IOP reduction might be due to dehydration effects of fasting. 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.…”

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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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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Effects of fasting on intraocular pressure in a black population

Cited by 8 publications

References 7 publications

Effect of Ramadan Fasting on Weight and Body Composition in Healthy Non-Athlete Adults: A Systematic Review and Meta-Analysis

Effect of Ramadan Fasting on Weight and Body Composition in Healthy Non-Athlete Adults: A Systematic Review and Meta-Analysis

Effect of Fasting on Intraocular Pressure

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

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