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Fundus Reading Hood

Fundus Reading Hood. Team Members Leah Brandon (Team Leader) Adam Dahlen (Communicator) Sara Worzella (BSAC) Nathan Kleinhans (BWIG) Client Dennis Hafford Advisor John G. Webster. Overview. Problem Statement Motivation Background Product Design Specification Designs Decision Matrix

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Fundus Reading Hood

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  1. Fundus Reading Hood Team Members Leah Brandon (Team Leader) Adam Dahlen (Communicator) Sara Worzella (BSAC) Nathan Kleinhans (BWIG) Client Dennis Hafford Advisor John G. Webster

  2. Overview • Problem Statement • Motivation • Background • Product Design Specification • Designs • Decision Matrix • Future Work • Questions

  3. Problem Statement The goal of this project is to develop a monitor hood that will block ambient light for the photograph graders at the Fundus Photograph Reading Center. Determining problematic sites in retinal scans is used to diagnose disease states in the eyes. A controlled environment is necessary for grading in order to assure correct identification of these sites. Creating a monitor hood will provide this controlled environment.

  4. Fundus Reading Center Mission: “strives to further the understanding and treatment of preventable blindness through interpretation of ophthalmic images in clinical studies” Motivation

  5. Ophthalmic Photography is noninvasive Parts of the eye photographed: Retina Retinal vasculature Optic nerve head Optic discs Research Areas: Diabetic Retinopathy Age-related Macular Degeneration Hypertensive Changes of the Retina Studies of the Ocular Complications of AIDS (CMVR) Age-related Eye Disease Study (AREDS). Ophthalmic Research www.terrymen.demon.co.uk/eyetoey5.htm

  6. Viewing Fundus Photographs • Use stereoscope to view photographs on computer monitor • Photographs viewed in stereo • Readers grade photographs • Adhere to strict protocol for quality of ophthalmic photographs • Ambient light is a major concern when viewing http://www.jhu.edu/wctb/coms/patient/photog/fundus.htm

  7. Client Requirements • Full view of monitor at all times • Adjustable length of 24 inches • Removable from the monitor or < 15 inch fixed length • Small footprint • Minimal storage space

  8. Client Requirements Cont. • Taper to a closed viewing port of approximately 8 inches by 3.5 inches • Flexible viewing window • Adjustable angle of view • Design flexibility • 64 lux

  9. Current Monitor Hoods • Reduce glare and background light • Does not block ambient light • Not adjustable • Not compatible with stereoscope http://www.photodon.com/mgrh.htm

  10. Alternative Designs • Rotating Bar • Solid Interlocking Panels • Accordion

  11. Rotating Bar Design • Corner plate with series of 3 bars on each • Last bar interlocks with bar on opposing side • Vinyl-like fabric secured around the bar cage • Snaps in 3 locations; one for each size monitor

  12. Advantages Flexible to different monitor sizes Projected cost Ease of storage Disadvantages Slightly cumbersome setup for client Possible instability Rotating Bar Design

  13. Solid Interlocking Panel Design • Adjustable solid frame provides support for sides • Solid side panels slide out • Top/bottom are cloth with multiple sets of snaps

  14. Advantages Sturdy construction Easy depth adjustment Easy to set up Disadvantages Leaves a larger footprint Front plate may hinder stereoscope adjustability Most costly design Solid Interlocking Panel Design

  15. Accordion Design • Retractable Hood • Elastic Connections Between Corners • Detachable Viewing Window

  16. Advantages Flexible Storage Range of Size Simple to Use Disadvantages Preparation Time Conflicts with Normal Viewing Accordion Design

  17. Design Matrix* *Scale: 1-5 1: Poor 3: Satisfactory 5: Outstanding

  18. Future Work • Design Feedback and Modifications • Research and Materials • Fabric • Measurements • Develop Prototype

  19. References • ARIC Grading Protocol – Lightbox. Fundus Photograph Reading Center 1998. 21 Sept. 2005. http://eyephoto.ophth.wisc.edu/ResearchAreas/Hypertension/LBox/LTBXPROT_995.html • Fundus Photograph Reading Center. University of Wisconsin-Madison 2001. 21 Sept. 2005. http://eyephoto.ophth.wisc.edu/ • Hafford, Dennis. Client Meeting. 15 Sept. 2005. • Hafford, Dennis. Email to Authors. 20 Sept. 2005. • Screen Reflections. Think Pad IBM. 3 Oct. 2005 • http://www.pc.ibm.com/ww/healthycomputing/vdt12.html • Timmermeister, Jean. Have You Wondered About How to View Stereo Images?. PSA Journal. Nov. 2003. http://www.findarticles.com/p/articles/mi_m1306/is_11_69/ai_110808796. • What They Are and How They Work. Stereo Images from Juneau. 29 Sept. 2005. http://stereo.thurstons.org/stereo_help.htm

  20. Questions?

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