Purpose
To report the clinical and spectral-domain optical coherence tomography (SD-OCT) finding of focal choroidal excavation(FCE) in Korean population.
Methods
The medical records of 27 patients (30 eyes) with FCE were reviewed. Demography, clinical histories, and SD-OT findings were analyzed.
Results
The mean age of patients was 51 years (range, 25-76). Seventeen (63%) patients were men. The mean refractive error was -3.7 diopters (range, +2.5 to -9.0). In 19 (63%) eyes, SD-OCT showed no separation between the outer retinal layers and the retinal pigment epithelium (RPE) (conforming type). There was a separation between the outer retina and RPE (non-conforming type) in 11 (37%) eyes. The mean largest diameter and the height of lesions were 833μm and 104μm, respectively. The mean subfoveal choroidal thickness was 275μm (range 70-571). Ten (33%) eyes were associated with central serous chorioretinopathy (CSC), nine in the affected eye and one in the unaffected fellow eye. Five (17%) eyes were associated with chorioidal neovascularization. Non-conforming type FCE was associated with greater lesion height (P=0.008) and the presence of CSC (P=0.001). There was one case of conforming type FCE with CSC, which spontaneously was converted to non-conforming type with CSC progression, and then re-converted to conforming type following intravitreal bevacizumab.
Conclusions
Focal choroidal excavation is a recently described idiopathic entity, which may be more common in Asian population. There appears to be an association between FCE and CSC. Choroidal neoveascularization may be associated in some patients.
Keywords: 550 imaging/image analysis: clinical •
688 retina •
585 macula/fovea