Computer Controlled Eyes for Human Patient Simulator Silviu Diaconu Emad Elsamadicy Anas Othman Azreena Ahmad Shukri Group 8 Advisor : Ray Booker

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 ?

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 ( mm)  Speed  Pink eye/ Redness (intensity)  Blinking (Eyelids)- Reaction

Current eye simulators $300 ~ $2000 Limited functions  Movement  Blinking Mechanical Eyes Standalone Eye Simulator $1100 (golimbs.com) Fundoscopic Exams using slides Separated from SimMan

Our Solution Proposal Using microdisplay technology we can implement 3D-graphics to model anatomical eye features and specific physiological responses required.

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.

Initial Experimental Setup Micro-display Controller PC (3D Graphics Software) Joystick Controller eMagin OLED LCD OLED

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

SimMan Head Dimensions TOP VIEW FRONT VIEW 1.7” 1.5” A B A = 4.1” B = 0.8” Dimensions Limited space LCD & Circuit Board Virtualize implementation of LCD screen and circuit board using 3D Studio Max

3D Studio Max Create 3D Model  Eyeball & Eyelids Problems  Rendering delay  Motion capture control Solution  3D Game Engine (DirectX or OpenGL) Demo

Current Setup Lilliput 1.8” screen 3D Studio Max 3D game engine (DirectX) Mapped Keyboard Video Output HardwareSoftware Symmetrical Video Feed Controls 3D Object VGA to Component Adapter

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

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.