Annual AsMA Scientific Meeting Fluid Shifts in Space Is it ...asmameeting.org/asma2013_mp/pdfs/asma2013_present_426.pdf84th Annual AsMA Scientific Meeting Fluid Shifts in Space Is

84th Annual AsMA Scientific Meeting

Fluid Shifts in SpaceIs it all in our heads?

Eye Model for UnderstandingVisual Changes in Spaceflight

May 15, 2013


• This is independently funded research.

• I will not discuss off-label use and/or investigational use in my presentation.


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Disclosure Information


• Hyperopia • Papilledema

• Posterior globe flattening

• Choroidal folds


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Dual Channel Assumption

Spaceflight Pathology


• Hyperopia • Papilledema

• Posterior globe flattening

• Choroidal folds


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Dual Channel Assumption




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Paradox in spaceflight

• No other symptoms of elevated ICP

• Central and peripheral venous pressures are reduced

• IOP initially increases in spaceflight

• No known reason for hyperopic shift

Earth explanations

• Increased intracranial pressure (ICP)

• Elevated venous pressures (edema, choroidal folds, and shortening of axial length)

• Reduced intraocular pressure (IOP)

Reducing Cognitive Load




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Limited Capacity Assumption



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Combining Images and Data

3D Animation Software



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Combining Images and Data



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Animation



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Interactive



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Thank You

Caroline O’DriscollJay C. BuckeyJacob SwanDonna HughesJérémie St-Amand

Documents

Annual AsMA Scientific Meeting Fluid Shifts in Space Is it ...asmameeting.org/asma2013_mp/pdfs/asma2013_present_426.pdf84th Annual AsMA Scientific Meeting Fluid Shifts in Space Is