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Tarun Arora, Amit Sobti, Anita Panda, Sumeet Khanduja, Vishal Arora, Tanuj Dada; Repeatability Of Diurnal Intraocular Pressure Measurements In Glaucoma Patients. Invest. Ophthalmol. Vis. Sci. 2011;52(14):3446.
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To evaluate the short-term repeatability of diurnal intraocularpressure (IOP) pattern in subjects with primary open glaucomaon chronic ocular hypotensive therapy.
Thirty cases of primary open angle glaucoma (POAG) underwentdiurnal IOP estimation (7am to 10 pm; every 3 hrs) using Goldmanapplanation tonometer on 2 visits, 1 week apart. Intraclasscorrelation coefficient (ICC) was used to determine agreementof IOP values of one eye at each time point between visits.
Mean age of the patients was 59.15 ±11.12 yrs (45% females).Between-visit agreement of IOP values at each time point generallywas poor to fair, with ICCs ranging from 0.04 to 0.56. The correlationbetween visits was lowest at 7 am (0.04) and highest at 1pmand 7pm (0.56). Between-visit agreement of IOP change over timebetween time points was uniformly poor (ICCs -0.23 to 0.33).
POAG patients do not manifest reproducible diurnal IOP patternwhen measured by Goldmann tonometry over a short time period.A single-day assessment of IOP is not adequate to evaluate adequacyof IOP control.
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