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Scholars Journal of Applied Medical Sciences | Volume-1 | Issue-05
Diurnal Variation of Intra Ocular Pressure (IOP) in Healthy Individuals: A Pilot Study
Srikanth Sajja, Purnodai Vemapti
Published: Sept. 30, 2013 | 73 69
DOI: 10.36347/sjams.2013.v01i05.0033
Pages: 488-492
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Abstract
Aqueous flow has a distinctive circadian rhythm, being lower at night than during the day. IOP fluctuates in a rhythmical diurnal pattern and this fluctuation is greater in eyes with glaucoma.The total number of subjects included in the study was 100 apparently healthy individuals (non-glaucomatous and not suffering from any other ocular problem). Of these 100 individuals, 50 were men and 50 women in the age groups 20-40 and 41-60years. According to the results from our study , IOP in the morning when compared with the afternoon IOP showed a decrease of 3.1 mmHg (21.5 %) & 2.41 mmHg( 17.97 %) in IOP in Right and left eye ‘s in Men of 20-40 years age group & a decrease of 2.27mmHg( 12.03 % ) & 2.29 mmHg ( 12.84 % ) in IOP in Right and left eye’s in women of 20-40 years age group. Similarly, IOP showed a decrease of 2.26 mmHg( 14.47% ) & 2.98 mmHg ( 20.58 % ) in IOP in Right and left eye ‘s in Men of 40-60 years age group & a decrease of 2.07 mmHg(10.80 % ) & 1.62 mmHg (8.95% ) in Right and left eye’s in women of 40-60 years age group was observed . In our study, we found a peak (maximum) IOP around morning and trough (minimum) IOP in the afternoon in majority of the subjects.