title: Enhanced depth imaging optical coherence tomography.
abstract: Imaging the choroid with conventional commercial spectral-domain optical coherence tomography (SD-OCT) has been difficult, mainly because of difficulty in signal transmission beyond the retinal pigment epithelium. A recent modification to the standard technique, termed enhanced depth imaging optical coherence tomography (EDI-OCT), was able to image the choroid with reasonable clarity using commercial SD-OCTs. The aim of this article was to review the technique, principle, recent findings, and possible future developments regarding EDI-OCT. A MEDLINE search on all published articles on EDI-OCT was performed up to December 2010. The principle behind EDI-OCT was discussed. Modification to the conventional technique in image acquisition was described and illustrated with figures. EDI-OCT findings in various retinal and choroidal diseases were discussed. Advantages and disadvantages were also discussed. EDI-OCT has proved to be a promising novel technique in imaging the choroid.
authors.affiliation: Eye Institute, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, ROC. ianyhwong@gmail.com
authors.forename: Ian Y
authors.initials: IY
authors.lastname: Wong
authors.forename: Hideki
authors.initials: H
authors.lastname: Koizumi
authors.forename: Wico W
authors.initials: WW
authors.lastname: Lai
mesh_terms: D002829:Choroid / Q000473:pathology*; D015862:Choroid Diseases / Q000175:diagnosis*; D003941:Diagnostic Techniques, Ophthalmological; D006801:Humans; D041623:Tomography, Optical Coherence