|Bilateral Choroidal Thicknesses Analysis of Active and Resolved Central Serous Chorioretinopathy|
|Banafsheh Kharrazi Ghadim1, Amir Abdollah Eftekhari Milani1, Afsane Qasemzade1, Mohamad Reza Niyousha1|
|1Tabriz University of Medical Sciences, Ophthalmology, Tabriz, Iran.|
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Keywords : Choroidal thickness, Central serous chorioretinopathy, Fovea, Optical coherence tomography
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Objectives: This study aimed to examine the choroidal thicknesses (ChT) changes before and after resolution of subretinal fluid in patients with central serous chorioretinopathy (CSR) and in their fellow eyes.
Materials and Methods: Patients with acute CSR were studied and followed until subretinal fluid resolved. Sixty-eight eyes from 34 CSR cases (24 men and 10 women, mean age of 37.34 ± 6.2, range 27-50) were examined. Their ChT was measured using enhanced depth imaging optical coherence tomography (EDI-OCT). Imaging repeated after sub-retinal fluid resolution. ChT changes were analyzed before and after the resolution of subretinal fluid in both eyes.
Results: Mean ChTs in CSR eyes were 387 ± 97 μm, 414 ± 97 μm, and 384 ± 87 μm in 1 mm temporally away from the center, central sub-fovea, and 1 mm nasally away from the center, respectively; and those in the fellow eyes were 283 ± 55 μm, 303 ± 60 μm, and 282 ± 56 μm in the same order. ChT decreased significantly (P≤0.001) to 305 ± 82 μm, 334 ± 86 μm, and 313 ± 76 μm in CSR eyes and to 242 ± 52 μm, 262 ± 55 μm, and 246 ± 48 μm in contralateral eyes in the temporal, central sub-foveal, and nasal sequences after subretinal fluid resolution, respectively. There was a strong correlation between the ChT in active phase and the ChT in resolved phase in both affected and fellow eyes. There was no detectable correlation between central sub-foveal fluid height and sub-foveal choroidal thickness in the affected and fellow eye (P = 0.23).
Conclusion: Nasal and temporal comparison of the affected and fellow eyes before and after fluid resolution showed that the nasal choroid was thinner than temporal choroid (as the average population) in active phase. In the resolution phase, however, it was the temporal choroid that was thinner than the nasal choroid, and the resolution pattern was not asymmetric.
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