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Background: Oral water ingestion increases blood volume, and hence blood pressure (BP) which in turn increases intraocular pressure (IOP). The aim of the present study was to know the interrelationship between BP and IOP of both the sides, before and after water ingestion, in young healthy male subjects.
Methods: This is a comparative and interrelationship study for which thirty six male subjects aged 17- 20 years were selected. BP of both arms was recorded every 15 minutes and IOP was recorded every 30 minutes for two hours in both control and study trials (before and after water ingestion respectively). Statistical analysis was done using Student’s t test and regression analysis.
Results: Water ingestion led to a significant increase in BP and IOP of both eyes. Significant correlation was present between mean arterial pressure (MAP) and IOP on right side in both trials. But, there was no correlation between MAP and IOP on left side in both trials.
Conclusion: It can be concluded that correlation between BP and IOP, before and after water ingestion is not uniform on both sides, whose cause cannot be clearly explained and therefore, needs further in depth study of the underlying anatomical and physiological processes.
Water ingestion, blood pressure, intraocular pressure, mean arterial pressure, normal eyes