1. Computer assisted electroretinogram data acquisition and analysis Nick Balge, Andrew Dias, Whitney Johnson, Dan Jonovic Client Dr. Bikash Pattnaik Advisor Professor Mitch Tyler Computer assisted ERG data acquisition and analysis

2. Window to the World http://www.tibetanpulsingyoga.com/eng_typ.htm

3. The Electroretinogram Electrodes placed on retina Retina stimulated Resultant wave recorded and analyzed Helps study eye, systemic diseases http://webvision.med.utah.edu/ClinicalERG.html Slow-wave time (ms) Voltage(mV)

4. Problem Statement Design a computer interface Valve control/liquid exchange Integrate light wheel Data storage

5. The Lab

6. Design Constraints Design an interface in LabVIEW to  Control & record light intensity  Integrate solution delivery  Real-time analysis  Export data  Adjust sample duration & number

7. The current interface The interface Displays graphs in real-time Lacks some functionalities The GUI Looks cluttered Unappealing colors User enters input via keyboard

8. Design 1: Tweak existing interface Keep existing LabVIEW template Add necessary functionality to back end Slightly modify GUI  More visually pleasing  Better organization

9. Design 2: GUI Overhaul Simplicity Consistency Familiarity

10. Design 3: Start from scratch Scrap existing design Choose programming Language Focus on modularity

11. Decision Matrix Criteria (weight) TweakOverhaulStart over Functionality (30)30 Ease of Use (30)1030 Complexity (20)20100 Aesthetic Appeal (15) 515 Modularity (5)225 Total (100)678780

12. Future Work Code, code, code Universal Design Testing

13. Questions?

14. References Green and Kapousta-Bruneau. 2006. Evidence that L-APS and D,L-APH can preferentially block cone signals in the rat retina. Visual Neuroscience. 24(1):9- 15. Matsui, Y et al. 1994. Electroretinogram b/a wave ratio improvement in central retinal vein obstruction. British Journal of Ophthamology. 78(3):191-8. Medline Plus. 2008. Electroretinography. US National Library of Medicine. Creel, D. 2003. Clinical Electrophysiology. John Moran Eye Center, University of Utah. Audie Technology. 2008. Flow Pro Automatic Valve Opener. http://www.audiotech.com/flow-pro/valve-opener-flow-pro.html Ido Perlman. 2008. The Electroretinogram: ERG. John Morgan Eye Center, University of Utah. http://webvision.med.utah/edu/ClinicalERG.htmlhttp://webvision.med.utah/edu/ClinicalERG.html AA Kazaryan. 2007. Functional characteristics of the retina in Glaucoma. Acta Opthalmologica Scandinavia. Vol. 85 Issue s240.