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Project Title:  Optical System for Monitoring Net Ocular Blood Flow Reduce
Fiscal Year: FY 2016 
Division: Human Research 
Research Discipline/Element:
HRP HHC:Human Health Countermeasures
Start Date: 06/01/2016  
End Date: 05/31/2018  
Task Last Updated: 12/29/2017 
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Principal Investigator/Affiliation:   Mujat, Mircea  Ph.D. / Physical Sciences, Inc. 
Address:  20 New England Business Center 
Andover , MA 01810-1077 
Phone: (978) 738-8254  
Congressional District:
Organization Type: INDUSTRY 
Organization Name: Physical Sciences, Inc. 
Joint Agency:  
Project Information: Grant/Contract No. NNX16CC20C 
Responsible Center: NASA JSC 
Grant Monitor: Norsk, Peter  
Center Contact: 
Solicitation / Funding Source: SBIR Phase II 
Grant/Contract No.: NNX16CC20C 
Project Type: GROUND 
Flight Program:  
TechPort: No 
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Human Research Program Elements: (1) HHC:Human Health Countermeasures
Human Research Program Risks: None
Human Research Program Gaps: None
Task Description: Physical Sciences Inc. (PSI) proposes to develop a novel ophthalmic imaging platform for the characterization and monitoring of visual impairment observed in long-duration space flights. This platform will combine non-invasive measurement of retina/choroid structure and ocular blood flow based on Optical Coherence Tomography (OCT) and wide-field semi-quantitative global flow visualization using Line-scanning Doppler Flowmetry (LSDF). During Phase II a system will be fabricated utilizing the most deeply penetrating waveband around 1060 nm which is especially critical for choroidal imaging. Therefore, the PSI's instrument will address the need for accurate 3D measurement of posterior segment layer thicknesses and volumes, and vascular (retinal and choroidal) topology and flow quantification. This novel imaging platform will enable Phase II imaging studies in animals and human subjects in normal and fluid-shift models of micro-gravity conditions, which are in line with the International Space Station (ISS) mission. Prior PSI experience in developing advanced ophthalmic imaging systems and space-qualified hardware will be leveraged to ensure the successful outcome of this important R&D program.

Research Impact/Earth Benefits: Potential Non-NASA Commercial Applications: This technology has multiple potential uses in clinical research and healthcare. Understanding normal retinal functions and its alterations is a very active research area. The retina is among the most highly vascularized and metabolically active tissues in the body. It represents the only part of the central nervous system where capillary blood flow is visible and can be measured noninvasively. Like the central nervous system it is susceptible to ischemic (insufficient blood flow) injury. Degenerative neurovascular diseases (e.g., diabetic retinopathy) of the eye often have either hemodynamic consequences or causes, though the mechanisms are poorly understood. In addition to diseases there are other causes that can disturb the hemodynamic activity of the retina. Little is known about the ocular and cerebral blood flow during exposure to increasingly hypoxic conditions (insufficient oxygen supply) or hypercapnia (too much CO2). Blood flow alterations occur under the influence of prolonged hypoxia. There is a close correlation between the regulation of blood supply to the brain and to the retina, due to similar vascular regulatory processes. The auto-regulation of blood flow in the eye is clearly exquisitely sensitive to many neurovascular and metabolic signaling systems. An advanced diagnostic imaging system which can accurately track multiple anatomical and physiological changes in the eye over time is therefore fundamental to understanding and mitigating these effects.

Task Progress & Bibliography Information FY2016 
Task Progress: New project for FY2016. Reporting not required for this SBIR Phase 2 project.

Bibliography Type: Description: (Last Updated: ) 

Show Cumulative Bibliography Listing
 None in FY 2016