scholarly journals Optical Scattering from Vitreous Floaters

2021 ◽  
Author(s):  
Stuart W. Harmer ◽  
Andrew J. Luff ◽  
Giampaolo Gini
Keyword(s):  
Optical Scattering ◽  
Vitreous Floaters

OCT visualization of vitreous floaters for evaluation of the efficiency of laser vitreolyzis

Reflection ◽  
2019 ◽  
pp. 45-50
Author(s):  
V. A. Shaimova ◽  
◽  
T. B. Shaimov ◽  
A. Y. Galin ◽  
R. B. Shaimov ◽  
...  
Keyword(s):  
Vitreous Floaters

Remote turbidity measurement with a laser reflectometer

1998 ◽  
Vol 37 (12) ◽  
pp. 255-261 ◽  
Author(s):  
Mark Johnson
Keyword(s):  
Water Surface ◽  
Free Water ◽  
Optical Scattering ◽  
Flowing Water ◽  
Water Stream ◽  
Water Turbidity ◽  
Water Colour ◽  
Contact Measurement ◽  
Optical Instruments ◽  
Better Than

A simple, laser-based reflectometer is described for the measurement of water turbidity via 180° optical scattering. Applications exist both in clean source waters (0-1000NTU) with a minimum detectable turbidity better than 1NTU, and in dense wastewater primary-clarifier sludges. The non-contact measurement is performed from a distance at least up to 10m, substantially avoiding the usual window fouling problems of optical instruments. By measuring directly in the process, through a free water surface or on the side of a flowing water stream, the difficulties of transporting sample to the instrument are also avoided. Extensions to be described allow measurement also of water colour.

scholarly journals 27-Gauge Vitrectomy for Symptomatic Vitreous Floaters with Topical Anesthesia

2017 ◽  
Vol 8 (1) ◽  
pp. 35-39 ◽  
Author(s):  
Zhong Lin ◽  
Nived Moonasar ◽  
Rong Han Wu ◽  
Robin R. Seemongal-Dass
Keyword(s):  
Postoperative Complications ◽  
Minimally Invasive ◽  
Pars Plana Vitrectomy ◽  
Topical Anesthesia ◽  
Retrobulbar Anesthesia ◽  
Vitreous Floaters ◽  
Pars Plana ◽  
Vitrectomy Surgery ◽  
Surgery Duration

Purpose: Traditionally acceptable methods of anesthesia for vitrectomy surgery are quite varied. However, each of these methods has its own potential for complications that can range from minor to severe. The surgery procedure of vitrectomy for symptomatic vitreous floaters is much simpler, mainly reflecting in the nonuse of sclera indentation, photocoagulation, and the apparently short surgery duration. The use of 27-gauge cannulae makes the puncture of the sclera minimally invasive. Hence, retrobulbar anesthesia, due to its rare but severe complications, seemed excessive for this kind of surgery. Method: Three cases of 27-gauge, sutureless pars plana vitrectomy for symptomatic vitreous floaters with topical anesthesia are reported. Results: The vitrectomy surgeries were successfully performed with topical anesthesia (proparacaine, 0.5%) without operative or postoperative complications. Furthermore, none of the patients experienced apparent pain during or after the surgery. Conclusion: Topical anesthesia can be considered for 27-guage vitrectomy in patients with symptomatic vitreous floaters.

scholarly journals Hyperbolic Nanoparticles on Substrate with Separate Optical Scattering and Absorption Resonances: A Dual Function Platform for SERS and Thermoplasmonics

2021 ◽  
pp. 2100888
Author(s):  
Yingqi Zhao ◽  
Aliaksandr Hubarevich ◽  
Marzia Iarossi ◽  
Tetiana Borzda ◽  
Francesco Tantussi ◽  
...  
Keyword(s):  
Optical Scattering ◽  
Dual Function

Detection of Water Droplet Size and Anion Species by Nonlinear Optical Scattering

1987 ◽  
Vol 4 (1-4) ◽  
pp. 85-89 ◽  
Author(s):  
Johannes H. Eickmans ◽  
Shi-Xiong Qian ◽  
Richard K. Chang
Keyword(s):  
Droplet Size ◽  
Water Droplet ◽  
Nonlinear Optical ◽  
Optical Scattering ◽  
Anion Species

scholarly journals Optical nanomanipulation on solid substrates via optothermally-gated photon nudging

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Jingang Li ◽  
Yaoran Liu ◽  
Linhan Lin ◽  
Mingsong Wang ◽  
Taizhi Jiang ◽  
...  
Keyword(s):  
Colloidal Particles ◽  
Solid Substrate ◽  
Optical Scattering ◽  
Functional Nanostructures ◽  
Non Invasive ◽  
Solid Substrates ◽  
All Optical ◽  
Scattering Force ◽  
Reconfigurable Assembly

AbstractConstructing colloidal particles into functional nanostructures, materials, and devices is a promising yet challenging direction. Many optical techniques have been developed to trap, manipulate, assemble, and print colloidal particles from aqueous solutions into desired configurations on solid substrates. However, these techniques operated in liquid environments generally suffer from pattern collapses, Brownian motion, and challenges that come with reconfigurable assembly. Here, we develop an all-optical technique, termed optothermally-gated photon nudging (OPN), for the versatile manipulation and dynamic patterning of a variety of colloidal particles on a solid substrate at nanoscale accuracy. OPN takes advantage of a thin surfactant layer to optothermally modulate the particle-substrate interaction, which enables the manipulation of colloidal particles on solid substrates with optical scattering force. Along with in situ optical spectroscopy, our non-invasive and contactless nanomanipulation technique will find various applications in nanofabrication, nanophotonics, nanoelectronics, and colloidal sciences.

Variations in the optical scattering properties of skin in murine animal models

2011 ◽  
Author(s):  
Katherine Calabro ◽  
Allison Curtis ◽  
Jean-Rene Galarneau ◽  
Thomas Krucker ◽  
Irving J. Bigio
Keyword(s):  
Animal Models ◽  
Optical Scattering

Optical scattering with hyperspectral imaging to classify longissimus dorsi muscle based on beef tenderness using multivariate modeling

Meat Science ◽  
2013 ◽  
Vol 95 (1) ◽  
pp. 42-50 ◽  
Author(s):  
Kim Cluff ◽  
Govindarajan Konda Naganathan ◽  
Jeyamkondan Subbiah ◽  
Ashok Samal ◽  
Chris R. Calkins
Keyword(s):  
Hyperspectral Imaging ◽  
Optical Scattering ◽  
Longissimus Dorsi ◽  
Multivariate Modeling ◽  
Beef Tenderness ◽  
Longissimus Dorsi Muscle ◽  
Dorsi Muscle
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