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Evaluation of foveal photoreceptor layer in eyes with macular edema associated with branch retinal vein occlusion after ozurdex treatment

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Abstract

The aim of this study was to evaluate the central retinal thickness (CRT), outer nuclear layer thickness (ONLT), photoreceptor layer thickness (PLT), photoreceptor layer integrity, and the correlation between visual acuity and PLT in eyes with branch retinal vein occlusion (BRVO) 2 months after treatment with intravitreal dexamethasone implant (Ozurdex; Allergan, Inc, Irvine, CA). In this prospective study, 32 eyes of 32 patients were enrolled. A single injection of Ozurdex was administered to all the patients. CRT, ONLT, and PLT were measured using spectral-domain optical coherence tomography before and 2 months after the injection. Best-corrected visual acuity (BCVA [logMAR]) and photoreceptor cell integrity were also evaluated. The average CRT, ONLT, PLT, and BCVA values for the sample group before the treatment were as follows: 707 ± 261, 608 ± 288, 70 ± 25, and 0.96 ± 0.22 µm, respectively. The average CRT, ONLT, PLT, and BCVA values for the sample group 2 months after the Ozurdex injection were as follows: 299 ± 149, 211 ± 138, 77 ± 20, and 0.63 ± 0.30 µm, respectively (p < 0.05). Two months after the Ozurdex injection, BCVA correlated with ONLT and PLT (r = 0.365, p = 0.048 and r = −0.488, p = 0.021, respectively), whereas BCVA was not correlated with CRT (r = 0.239, p = 0.189). Photoreceptor layer is associated with the visual function of eyes with macular edema secondary to BRVO. Also, ONLT seems to be more closely related to visual acuity improvement than CRT decrement.

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Authors and Affiliations

  1. Department of Ophthalmology, Kayseri Education and Research Hospital, Kayseri, Turkey

    Orhan Altunel, Necati Duru, Ayse Ozkose, Emre Goktas & Mustafa Atas

  2. Department of Ophthalmology, Acibadem Kayseri Hospital, Kayseri, Turkey

    Altan Goktas

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  1. Orhan Altunel
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  2. Necati Duru
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  3. Altan Goktas
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  5. Emre Goktas
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Correspondence to Orhan Altunel.

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Altunel, O., Duru, N., Goktas, A. et al. Evaluation of foveal photoreceptor layer in eyes with macular edema associated with branch retinal vein occlusion after ozurdex treatment. Int Ophthalmol 37, 333–339 (2017). https://doi.org/10.1007/s10792-016-0261-0

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  • DOI: https://doi.org/10.1007/s10792-016-0261-0

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