Novel perspectives on swept-source optical coherence tomography

Abstract

Technologies for multimodal digital imaging of vitreoretinal diseases have improved the accuracy of diagnosis and the depth of the knowledge of the mechanisms of disease and their response to treatments. Optic coherence tomography (OCT) has become a mandatory tool for the management and for the follow-up of retinal pathologies. OCT technology evolved in the last two decades from time-domain to spectral domain and recently to the swept-source OCTs (SS-OCT). SS-OCT improved the depth of imaging and the scan speed, thus adding novel algorithms and features such as for vitreous and vitreoretinal interface evaluation, choroid segmentation and mapping, OCT angiography and En-face OCT. The multimodal approach using SS-OCT is expected to advance the understanding of retinal pathologies such as age related macular degeneration, diabetic maculopathy, central serous chorioretinopathy, the pachychoroid spectrum and macular telangiectasia. Surgical vitreoretinal diseases such as vitreo-macular traction syndrome, epiretinal membrane, retinal detachment, proliferative vitreoretinal retinopathy and diabetic traction retinal detachment also will be better understood and documented with SS-OCT. This technology also provides great utility for a broad spectrum of ophthalmic pathologies including glaucoma, uveitis, tumors and anterior segment evaluation.

A Deep Learning Approach to Digitally Stain Optical Coherence Tomography Images of the Optic Nerve Head

“…Poor deep-tissue visibility and shadow artifacts [21] in OCT images as a result of light attenuation makes the development of robust segmentation tools difficult. With the advent of swept-source OCT [22], enhanced depth imaging [23,24,25] and compensation technology [26] the quality of OCT images has been improved, opening the door to new possibilities. Recently, our group has developed a post-processing technique that, when combined with compensation, could digitally-stain (highlight) neural and connective tissues in OCT images of the ONH.…”

Choroidal detachments: what do optometrists need to know?

“…The longer wavelengths and sweptsource laser result in better penetration into deeper ocular tissues for high-quality images of these structures. 30 In sweptsource optical coherence tomography, the suprachoroidal layer is seen as a hyperreflective line below the hypo-reflective large choroidal vessels, but above a slightly hyper-reflective sclera ( Figure 2).…”

iOCT in PVR Surgical Management

“…Salvatore Di Lauro 1,2 *, Salvador Pastor Idoate 1,2 and Jose Carlos Pastor 1,2 *Address all correspondence to: sadilauro@live.it…”

“…Optical coherence tomography (OCT) has dramatically changed the diagnosis, classification, and treatment of many vitreo-retinal diseases [1][2][3]. One of the most recent developments of this technology is the intraoperative OCT (iOCT).…”