Attention and investment could revolutionize applications in visioning and treatment of eye-related diseases.HAO F. ZHANG, NORTHWESTERN UNIVERSITY, AND KIEREN PATEL, OPTICENT HEALTHFirst reported in 1991 by Huang and colleagues1, OCT has become an important imaging tool for ophthalmology following innovations over the past three decades. OCT noninvasively provides 3D in vivo optical biopsy with microscopic resolution in the eye at a depth range up to the choroid2. Besides 3D anatomical imaging, OCT can also provide functional information. The most notable functional extension is OCT angiography (OCTA), which can map the microvasculature in the eye without contrast agent and is being investigated in clinical ophthalmology. A multicolored retinal blood oxygen...Read full articleRelated content from Photonics MediaARTICLESVIS-OCT needs stable, versatile light sourcesOptical coherence tomography (OCT) is the gold standard for noninvasive retinal imaging, enabling ophthalmologists to diagnose and treat multiple ocular diseases. Compared to traditional OCT, which...BioPhotonics Nov/Dec 2020 IssueMicroscopy, AI Capture Immune Cell Interactions in EyeA novel microscopy technique that expands on existing principles of adaptive optics — first developed to capture images of the sky without distortions from Earth’s atmosphere — has...BioPhotonics Jan/Feb 2021 IssueOCT Presents Multidimensional Imaging for Diagnosis and DetectionOptical coherence tomography (OCT) is a noninvasive imaging technique that is used to deliver high-resolution images in two or three dimensions. It relies on the wave-like properties of light to...BioPhotonics Jul/Aug 2021 IssueOCT Informs Real-Time Cancer DiagnosisThe origins of optical coherence tomography (OCT), a subsurface imaging technology based on low- coherence interferometry, can be traced to the first decade of the 1800s, when Thomas Young’s...BioPhotonics Nov/Dec 2020 IssuePRODUCTSCycloidal GearboxesGAM’s GCL cycloidal gearboxes from Electromate provide high precision and rigidity for horizontal and vertical robotic and motion control applications. The GCL is designed to withstand...Photonics.com 10/11/2021Myopia Management SystemThe MYAH myopia management system from Topcon Europe Medical BV is a tool for the comprehensive management of myopia and dry eye. The system allows eye care professionals to build, manage, and...Photonics.com 8/4/2020Medical Image SensorThe OH0TA OVMed® medical image sensor from OmniVision Technologies Inc. is designed to improve image quality and reduce power consumption for endoscope and catheter cameras while helping surgeons...BioPhotonics Jul/Aug 2021 IssueTE-Series CCD CamerasIntroducing the TE-series, which utilizes the powerful scientific CCD sensors from Teledyne e2v. This advanced camera series has low-read noise and exceptional full-well depth. Combined with a high...Promoted Content February 2022 IssuePHOTONICS HANDBOOK ARTICLESDigital Cameras: Smaller Pixels for Higher Resolution: Reducing pixel size can increase a digital camera's performance. 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While the 20th was the century of film cameras, the 21st belongs to the digital camera.The digital camera represents an integration of optics, mechanics and electronics consisting of three layers (Figures 1a, b and c). The top and the middle layers are printed circuit boards (PCBs),...Photonics HandbookRadiation Tolerances: Effects on CID Imaging Devices: The charge-injection device (CID) is a broadband (200 to 1100 nm) charge-transfer device (CTD) image sensor with capabilities well beyond the limitations of typical commercially available charge-coupled devices (CCDs), CMOS, and active pixel sensors.Like other CTDs, the CID imager uses hundreds of thousands (up to 4 million) pixel elements to capture optical images, and converts the light into an electronic charge which may be displayed on a...Photonics HandbookWHITEPAPERSWhat Is the Modulation Transfer Function?This whitepaper describes Modulation Transfer Function (MTF) in depth. It covers MTF measurements compared with the ideal diffraction limit, how MTF can be used to compare objective lens performance...Photonics.com 2/1/2022Cutting Edge Measurement of an InsertThe 3D optical profilometer S neox Five Axis makes it possible to quickly and flexibly obtain the key parameters necessary for the continuous improvement of our tools, such as the cutting edge...Photonics.com 12/10/2021Fractional Pixel Method for Improved Pixel-Level Measurement and Correction (Demura) of High-Resolution DisplaysAs display resolutions increase, imaging systems are challenged to continue to provide accurate pixel-level measurements while applying increasingly limited relative imaging resolution during...Photonics.com 1/14/2021Automated Solutions for SAE Standard HUD MeasurementHead-up display (HUD) technology is one of the largest growth areas in the automotive market, and standard measurement criteria are rapidly being defined to evaluate augmented projections for visual...Photonics.com 1/14/2021WEBINARSPhotonics for OphthalmologyPhotonics Media invites you to join us for our upcoming FREE digital conference, "Photonics for Ophthalmology." The event will feature several 15-minute online presentations on the use of light-based...Photonics.com 6/9/2016The Future of Imaging: Three PerspectivesPresenters: Professor Stephen Boppart The Future of Healthcare With Optical Biomedical Imaging A medical doctor and professor at the University of Illinois, Boppart's...Photonics.com 12/14/2011High-Speed Imaging At and Beyond the Diffraction LimitHari Shroff, Ph.D., head of the Section on High Resolution Optical Imaging at the National Institute of Biomedical Imaging and Bioengineering (NIBIB), will speak on his lab's latest work to develop...Photonics.com 2/16/2017Quantum-Enhanced Superresolution Confocal MicroscopyFar-field optical microscopy beyond the Abbe diffraction limit is already a reality. Yet, while Abbe's theory was based on classical physics, quantum mechanical phenomena were only very recently used...Photonics.com 10/26/2021PHOTONICS DICTIONARY TERMSoptical coherence tomography (OCT)A noninvasive (typically medical) optical imaging acquisition technique that uses light waves to form distinct, three dimensional, layered cross-sectional images of an optical scattering media (i.e....EDU.photonics.com 3/5/2018octaveThe interval between two points, where the frequency at the second point is twice the frequency of the first. In physics and optics, these two points for example would be any two consecutive...EDU.photonics.com 3/5/2018supercontinuum lightA broadband, white-light source produced by high-intensity light pulses propagating in various media. 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For the...Photonics.com 7/2/2018PHOTONICS BUYERS' GUIDE CATEGORIESOptical Coherence Tomography Imaging SystemsAn optical coherence tomography imaging system is a medical diagnosis technique that uses lightwaves to form cross-sectional images of a patient's retina.Surgical Laser SystemsProjection MicroscopesEyepiece LensesCOMPANIESReynard CorporationReynard Corporation has been a premier supplier of custom optics and thin-film coatings to a global customer base since 1984. Reynard focuses on manufacturing the highest quality products with...Photonics Buyers' GuideWasatch Photonics Inc.At Wasatch Photonics, we’re fascinated by the many ways light can be used to understand nature and solve the problems that touch our lives each day, and it shows in our innovation, applications...Photonics Buyers' GuideBaumer USABaumer Group is a manufacturer of sensors, encoders, measuring instruments, and components for automated image-processing. Baumer combines innovative technologies and customer-oriented service into...Photonics Buyers' GuideOptolong Optics Co. LtdOptolong Optics Co., Ltd is a manufacturer of fluorescence filters and astronomy filters. We also offer other interference filters such as UV filters, visible filters and near-infrared filters,...Photonics Buyers' Guide