PMID- 17867800 OWN - NLM STAT- MEDLINE DCOM- 20071126 LR - 20220309 IS - 1083-3668 (Print) IS - 1083-3668 (Linking) VI - 12 IP - 4 DP - 2007 Jul-Aug TI - Three-dimensional optical coherence tomography at 1050 nm versus 800 nm in retinal pathologies: enhanced performance and choroidal penetration in cataract patients. PG - 041211 AB - Frequency domain optical coherence tomography (FD-OCT), based on an all-reflective high-speed InGaAs spectrometer, operating in the 1050 nm wavelength region for retinal diagnostics, enables high-speed, volumetric imaging of retinal pathologies with greater penetration into choroidal tissue is compared to conventional 800 nm three-dimensional (3-D) ophthalmic FD-OCT systems. Furthermore, the lower scattering at this wavelength significantly improves imaging performance in cataract patients, thereby widening the clinical applicability of ophthalmic OCT. The clinical performance of two spectrometer-based ophthalmic 3-D OCT systems compared in respect to their clinical performance, one operating at 800 nm with 150 nm bandwidth (approximately 3 microm effective axial resolution) and the other at 1050 nm with 70 nm bandwidth (approximately 7 microm effective axial resolution). Results achieved with 3-D OCT at 1050 nm reveal, for the first time, decisive improvements in image quality for patients with retinal pathologies and clinically significant cataract. FAU - Povazay, Boris AU - Povazay B AD - Cardiff University, School of Optometry and Vision Sciences, Biomedical Imaging Group, Cardiff, Wales, CF24 4LU, United Kingdom. FAU - Hermann, Boris AU - Hermann B FAU - Unterhuber, Angelika AU - Unterhuber A FAU - Hofer, Bernd AU - Hofer B FAU - Sattmann, Harald AU - Sattmann H FAU - Zeiler, Florian AU - Zeiler F FAU - Morgan, James E AU - Morgan JE FAU - Falkner-Radler, Christiane AU - Falkner-Radler C FAU - Glittenberg, Carl AU - Glittenberg C FAU - Blinder, Susanne AU - Blinder S FAU - Drexler, Wolfgang AU - Drexler W LA - eng PT - Comparative Study PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Biomed Opt JT - Journal of biomedical optics JID - 9605853 SB - IM MH - Algorithms MH - Cataract/*pathology MH - Choroid/*pathology MH - Humans MH - Image Enhancement/*methods MH - Image Interpretation, Computer-Assisted/methods MH - Imaging, Three-Dimensional/*methods MH - Reproducibility of Results MH - Retina/pathology MH - Retinal Diseases/*pathology MH - Retinoscopy/*methods MH - Sensitivity and Specificity MH - Spectrophotometry, Infrared/methods MH - Tomography, Optical Coherence/*methods EDAT- 2007/09/18 09:00 MHDA- 2007/12/06 09:00 CRDT- 2007/09/18 09:00 PHST- 2007/09/18 09:00 [pubmed] PHST- 2007/12/06 09:00 [medline] PHST- 2007/09/18 09:00 [entrez] AID - 10.1117/1.2773728 [doi] PST - ppublish SO - J Biomed Opt. 2007 Jul-Aug;12(4):041211. doi: 10.1117/1.2773728.