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Background  The aim of this study was to investigate the potential significance of the central macular thickness (foveal thickness-FT) and choroidal thickness (CT) in the eyes of patients with iron-deficiency anemia, the most common form of the anemia, via enhanced-depth imaging optical coherence tomography (EDI-OCT). We also investigated whether such changes might serve as an early indicator of underlying hematological disease.    Methods  This prospective clinical study compared 96 female patients with iron-deficiency anemia and 60 healthy female control subjects. The macular and choroidal thicknesses in the temporal and nasal subfoveal areas were measured using enhanced-depth imaging optical coherence tomography (EDI-OCT) at 500 and 1500 microns and in five different regions (FCT, T 1500 , T 500 , N 500 , and N 1500 ).    Results  The mean ages of the patients and healthy controls were 34.08 ± 10.39 years and 32.29 ± 8.28 years, respectively ( P  =0.232). There were no significant changes in macular thickness between the groups (225.58 ± 19.76 vs. 222.45 ± 13.51,  P  =0.2). The choroidal thickness was significantly reduced in the patient group relative to the controls at all measured points (foveal choroidal thickness,  P  = 0.042; nasal–500 microns,  P  = 0.033; temporal–500 microns,  P  = 0.033; and temporal–1500 microns,  P  = 0.019). At some points, the choroidal thickness findings correlated with the hemoglobin values (temporal–500 microns,  r  = −0.287,  P  = 0.001; nasal–500 microns,  r  = −0.287,  P  = 0.005; nasal–1500 microns,  r  = −0.245,  P  = 0.016; and temporal–1500 microns,  r  = −0.280,  P  = 0.06).    Conclusions  Patients with iron-deficiency anemia had a significantly reduced choroidal thickness.

Changes in the choroidal thickness in reproductive-aged women with iron-deficiency anemia