The effect of religious fasting and dehydration at Ramadan on choroidal thickness and Retinal vessel densities, measured with optical coherence tomography angiography

Gökmen, Onur; Ozgur, Gokhan

doi:10.1177/1120672120958297

Cited by 9 publications

(8 citation statements)

References 29 publications

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“…Three articles were published on eye structure and function during RF. 78 79 80 First, the effect of RF and dehydration on intraocular pressure (IOP) and biometric parameters in primary open-angle glaucoma (POAG) patients was evaluated in a prospective study. They included 30 eyes of 30 POAG fasting patients, 40 healthy participants, and 40 nonfasting healthy individuals.…”

Section: Highlights Of the Year's Literaturementioning

confidence: 99%

Ramadan Fasting in Health and Disease in 2021: A Narrative Review

Hassan-Beck

Hafidh

Badi³

et al. 2022

Ibnosina Journal of Medicine and Biomedical Sciences

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Introduction: The literature on the health aspects of Ramadan fasting (RF) is widely spread in many journals. Materials and Methods: This is a narrative review of data obtained from the PubMed database (National Library of Medicine, Bethesda, Maryland, United States). We used the search term “Ramadan fasting,” and relevant records were examined. The publications are narrated thematically. Results: The publications spanned fundamental, clinical, professional, cultural, and advocacy facets. The publications crossed conventional disciplinary lines and geographical locations and appeared in journals with different access systems. The contents are presented under the themes that emerged depending on the retrieved literature. This year basic coverage included changes in physiology and nutrition during Ramadan. However, the clinical issues included a wide range of topics. These included the impact of RF on nonalcoholic fatty liver disease and adjustments needed in endocrine replacement therapy for hypothyroidism and adrenal insufficiency. Coverage also included chronic kidney disease. The impact on maternal health, fetal well-being, and long-term effects of RF exposures were addressed in several studies. Studies in cardiovascular medicine focused on blood pressure and cardiovascular risk factors. Sports medicine and athletes' well-being received somewhat prominent coverage. The impact on renal function, particularly in patients with chronic kidney disease, was investigated by a few authors. Several groups addressed the eyes' structure and function, neurological conditions, especially headache disorders, and hematological and oncological conditions. Finally, the impact of RF on several aspects of mental health and well-being was addressed by various groups. Conclusions: Health aspects of RF received a sustained academic interest with a broad spectrum in 2021. This narration provides an overview of the year's scholarly health-related literature on various aspects of health and disease. It should help researchers and clinicians catch up quickly with the health concerns during Ramadan.

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Section: Highlights Of the Year's Literaturementioning

confidence: 99%

Ramadan Fasting in Health and Disease in 2021: A Narrative Review

Hassan-Beck

Hafidh

Badi³

et al. 2022

Ibnosina Journal of Medicine and Biomedical Sciences

View full text Add to dashboard Cite

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“…An investigation has found no substantial changes in retinal thickness during IF ( 25 ), which might be due to a stringent self-regulatory system in the retina when perfusion pressures fluctuate dramatically ( 26 , 27 ). Previously, animal studies found that retinal blood flow self-regulates in a similar manner ( 28 ).…”

Section: Intermittent Fasting and Ocular Biological Parametersmentioning

confidence: 99%

“…In addition, there is a connection between neuromodulation and sub choroidal thickness. During IF, blood pressure drops, cardiac blood flow drops ( 33 ), and choroidal thickness under fovea increases when sympathetic tone drops and parasympathetic tone rises ( 16 , 25 ). The choroidal thickness under the fovea increased by nearly 3% during the fasting period compared to the non-fasting period ( 25 ).…”

Section: Intermittent Fasting and Ocular Biological Parametersmentioning

confidence: 99%

“…During IF, blood pressure drops, cardiac blood flow drops ( 33 ), and choroidal thickness under fovea increases when sympathetic tone drops and parasympathetic tone rises ( 16 , 25 ). The choroidal thickness under the fovea increased by nearly 3% during the fasting period compared to the non-fasting period ( 25 ). Insulin sensitivity may influence the thickness of the choroidal layer at IF ( 34 ).…”

Section: Intermittent Fasting and Ocular Biological Parametersmentioning

confidence: 99%

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Intermittent Fasting to the Eye: A New Dimension Involved in Physiological and Pathological Changes

Feng

Zhang

et al. 2022

Front. Med.

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Intermittent fasting (IF) is gaining popularity as a therapeutic dietary strategy that regulates metabolism and can alter the development of metabolic disorders. An increasing amount of research has connected ocular diseases to IF and discovered that it has a direct and indirect effect on the eye’s physiological structure and pathological alterations. This article summarizes the progress of research on IF in regulating the physiological structures of the ocular vasculature, the anterior segment of the eye, the retina, and the choroid. We explored the therapeutic potential of IF for various common ocular diseases. In the future, a comprehensive study into the fundamental processes of IF will provide a direct and rigorous approach to eye disease prevention and therapy.

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“…While fasting did not lead to any change in LD and CCT, the results demonstrated that it caused a slight decrease in ACD and ACV and a significant decrease in CD and IOP values. Gokmen and Ozgur [57] investigated the effect of religious fasting and dehydration during Ramadan on the choroidal thickness and vessel density in the superficial and deep vascular plexuses with optical coherence tomography angiography (OCTA) of 70 eyes of 35 healthy subjects with a mean age of 43 years. The measured choroidal thickness, superficial vessel density index, and deep vessel density index were 288.89 μm, 40.6%, and 41.4%, respectively, compared to 284.62 μm, 40.41%, and 41.41%, respectively when measured in the nonfasting period.…”

Section: Eyesmentioning

confidence: 99%

Ramadan fasting in health and disease (2020): A narrative review

Hafidh

Ali

Beshyah

2021

Ibnosina Journal of Medicine and Biomedical Sciences

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The medical literature on health aspects of Ramadan fasting (RF) is widely spread in many journals of varying access, making it less readily available to those interested in the subject. We performed a nonsystematic review of the international literature from a major online database (PubMed in 1 year [2020]). The search term “Ramadan fasting” was used, and relevant literature was narrated in a concise thematic account excluding diabetes. The publications spanned fundamental, clinical, ethical, professional, cultural, and advocacy facets. The publications predictably crossed the conventional disciplinary lines and geographical locations and appeared in journals with different access systems. The contents are presented under the emerged themes depending on the retrieved literature. This year, the basic coverage included changes in physiology, nutrition during Ramadan. However, the clinical issues included a more comprehensive range such as the impact of RF on the liver and gut, and endocrine conditions such as hypothyroidism and adrenal insufficiency. Coverage also included chronic kidney disease, maternal health and fetal well-being, cardiovascular medicine, nature and function of eyes, and neurological conditions, especially epilepsy. Sports medicine and athletes' well-being received somewhat prominent coverage. Other researchers focused on documenting patients' and health-care professionals' perceptions, attitudes, and practices during Ramadan. Health aspects of RF received a sustained academic interest with a broad spectrum in 2020. This narrative provides a scoping overview to help researchers and clinicians catch up quickly with state-of-the-art science today.

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The effect of religious fasting and dehydration at Ramadan on choroidal thickness and Retinal vessel densities, measured with optical coherence tomography angiography

Cited by 9 publications

References 29 publications

Ramadan Fasting in Health and Disease in 2021: A Narrative Review

Ramadan Fasting in Health and Disease in 2021: A Narrative Review

Intermittent Fasting to the Eye: A New Dimension Involved in Physiological and Pathological Changes

Ramadan fasting in health and disease (2020): A narrative review

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