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Ella Hoshuen Leung, Patricia Garcia, Richard B Rosen; Choroidal Thickness During Brief Periods of Accommodation in Normal Eyes. Invest. Ophthalmol. Vis. Sci. 2014;55(13):3415.
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The development of enhanced depth imaging optical coherence tomography (EDI OCT) has stimulated interest in the choroid. Previous studies have shown that subfoveal choroidal thickness varies with age, myopia, and time. Prolonged accommodation may cause temporary choroidal thinning in myopes. The purpose of this study was to determine the effects of brief periods of accommodation on normal eyes.
The subfoveal choroidal thicknesses were measured in 10 eyes with no significant past ocular histories. Subjects were imaged after focusing on a near target and then 5 minutes later, after focusing on a distant target. Student t-tests were used in the calculations.
The average age was 37.6 years old. The average subfoveal choroidal thickness after accommodation was 349.2 ± 80µm, and the average thickness in the non-accomodative state was 343.8 ± 74µm (p=0.81).
Brief periods of accommodation do not significantly affect the subfoveal choroidal thickness in healthy eyes.
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