Transversal and Longitudinal Images from the Retina of the Living Eye Using Low Coherence Reflectometry

Abstract

An optical coherence tomography (OCT) system to produce both longitudinal and transversal images of the in vivo human eye is presented. For the first time, OCT transversal images collected from the living eye at 50-m depth steps show details unobtainable with the state-of-the-art scanning laser ophthalmoscope. Images of up to 3ϫ3 mm are produced from the retina in less than a second. For images larger than 1.6ϫ1.6 mm, a path modulation is introduced by the galvanometric scanning mirror and is used as an effective phase modulation method.© 1998 Society of Photo-Optical Instrumentation Engineers. [S1083-3668(98)

Clinical Application of Rapid Serial Fourier-Domain Optical Coherence Tomography for Macular Imaging

“…Recently, a report was published that showed the use of FD OCT to create volumetric representations of various macular lesions, which is an extension of the technique we have illustrated in this article. 16 Other reports have been published which demonstrate similar mapping techniques using time-domain OCT. 17,18,28 In those time-domain models, however, the map was created from a series of C-scans, a potential weakness of which is that most clinicians rely on B-scans for evaluation of the retina. Therefore, high-quality B-scans are more desirable than C-scans.…”

“…B-scans can be reconstructed from a direction different from the scanning direction, and C-scans (en face planes) can also be reconstructed from the same data. This reconstruction approach was first proposed and tested in clinical settings for en face time-domain OCT imaging, 17,18 in which retinal images were acquired in C-scans; however, to our knowledge, there have been no published reports applying this technique to FD OCT imaging in clinical settings.…”

Optical coherence tomography imaging in uveitis

“…En-face optical coherence tomography Podoleanu et al [24][25][26][27][28][29][30] developed a system combining confocal ophthalmoscopy and OCT, producing en-face OCT images that can be directly compared with transversal images provided by the confocal channel. In OCT, the depth resolution is determined by the bandwidth of the optical source used; therefore, en-face OCT and conventional longitudinal OCT achieve the same depth resolution as long as the source used is the same.…”

Posterior retinal detachment without macular hole in high myopia: visualization with en face optical coherence tomography

“…1 It classically presents with forward displacement of IOL and associated myopic shift, 2,3 and usually occurs in the intra-or early postoperative period. 4 We report a case of late CBS secondary to the liquefied after-cataract without the lens displacement or change in the refractive status.…”

“…The recently introduced OCT ophthalmoscope provides coronal OCT scans (OCT C-scans) of the retina. [4][5][6] Case report…”