Impact of Ramadan fasting on intraocular pressure, visual acuity and refractive errors
2011
Introduction: Fasting evidently influences a variety of physiological parameters that can impact the ocular system. Among these modifications are alterations in insulin secretion, sympathetic activity, free fatty acids, lipid profile, melatonin, cortisol, electrolytes and catecholamines. In this study, we investigated the possible alterations in intraocular pressure (IOP), visual acuity and refractive errors during Ramadan fasting. Methods: IOP, visual acuity and refractive errors of both eyes of volunteers were measured on the first and last days of Ramadan (once in the morning and evening). Body weight was measured so as to estimate the amount of dehydration. Data from the two examinations was analysed using one-way analysis of variance. A p-value of less than 0.05 was considered statistically significant.
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