1. Depiction of Cavity Formation in Terrien Marginal Degeneration by Anterior Segment Optical Coherence Tomography

    Depiction of Cavity Formation in Terrien Marginal Degeneration by Anterior Segment Optical Coherence Tomography

    Purpose: To evaluate detailed morphologic changes of Terrien marginal degeneration (TMD) using anterior segment optical coherence tomography (AS-OCT). Methods: Two patients with TMD were examined by 1310-nm wavelength swept source optical coherence tomography, corneal topography, and slit-lamp microscopy. Results: AS-OCT depicted corneal thinning with intact epithelial layer in the peripheral cornea of both patients. Moreover, AS-OCT images of both patients clearly showed cavity formation surrounded and enclosed by intact epithelial and endothelial layers in the thinned area. Conclusion: We demonstrate here the existence of cavity formation in the peripheral cornea with TMD. This observation suggests a possibility that corneal thinning ...

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