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Computer Controlled Eyes for Human Patient Simulator
Silviu DiaconuEmad ElsamadicyAnas OthmanAzreena Ahmad Shukri
Group 8
Advisor : Ray Booker
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Problem Statement
Trauma care physicians rely on realistic medical simulators to expose them to life-threatening situations before treating on real patients
ED physicians express concern that current human patient simulators inadequately simulate physiological responses of the eyes.
Problem:
How to design a cost-effective realistic eye simulator that can implement a broad range of anatomical capabilities ?
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Performance Criteria
1. Size: Needs to fit SimMan’s eye sockets
2. Control/Response-Time : Must be externally controlled Should have minimal delay when reacting
to user input
3. Functionality: Must perform basic eye function
Movement (Full range) Pupil dilation/constriction (1 - 10 mm)
Speed Pink eye/ Redness (intensity) Blinking (Eyelids)- Reaction
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Current eye simulators
$300 ~ $2000 Limited functions
Movement Blinking
Mechanical Eyes Standalone Eye Simulator
$1100 (golimbs.com) Fundoscopic Exams using
slides Separated from SimMan
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Our Solution Proposal
Using microdisplay technology we can implement 3D-graphics to model anatomical eye features and specific physiological responses required.
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Goals & Factors
Develop a cost-effective computer-controlled eye simulator that is esthetically pleasing and realistic
Using micro-displays lowers both cost and maintenance than current eye simulators
3D graphics offers an effective method that can increase both the quality and number of various physiological response necessary for a realistic medial scenario.
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Initial Experimental Setup
Micro-display Controller
PC
(3D Graphics Software)
Joystick Controller
eMagin OLED
LCD
OLED
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Hardware : LCD Screen Lilliput 212GL-18NP
1.8”, 4:3 TFT LCD LCD size : 1.7” x 2” Circuit Board size : 3” x 2” Resolution : 116,160 (dots) Video Input : Composite Power supply: 8V $59.99 (eio.com)
Limitations FFC Cable Circuit Board Size (Extra functions) Heat generation from Backlight
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SimMan Head DimensionsTOP VIEW
FRONT VIEW
1.7”
1.5”
ABA = 4.1”
B = 0.8”
Dimensions Limited space
LCD & Circuit Board Virtualize implementation of
LCD screen and circuit board using 3D Studio Max
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3D Studio Max
Create 3D Model Eyeball & Eyelids
Problems Rendering delay Motion capture control
Solution 3D Game Engine (DirectX
or OpenGL)
Demo
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Current Setup
Lilliput 1.8” screen
3D Studio Max
3D game engine(DirectX)
Mapped Keyboard
Video Output
Hardware Software
SymmetricalVideo Feed
Controls
3D Object
VGA to Component Adapter
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Current Work
Meeting with Prof. Bodenheimer to discuss 3D studio max integration with game engine
Animating pupil dilation and constriction
Finding best way to fit LCD screen into SimMan head
Meeting Philip Davis of ME Machine Shop to discuss how to cut SimMan’s head properly
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Future Work
Further model detailed 3D images of the eye including the retina.
Begin cutting SimMan head to fit in LCD screen
Test eye functionality by using real-time simulation
Survey physicians to validate performance.