aravind teleophthalmology network - atnv2020eresource.org/content/files/atn.pdf · aravind...
TRANSCRIPT
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Aravind TeleophthalmologyNetwork - ATN
Dr.KimProgram Director
ATNAravind Eye Care System
Madurai
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Over the years……doctors interacted with each other
to get second opinion using the available communication technology
Invention of Telephone changed the way people
lived!
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• A system that electronically transports a consulting Physician from a medical center to a site at a distant facility where his/her expertise is required
ARAVIND EYE CARE SYSTEMARAVIND EYE CARE SYSTEMARAVIND EYE CARE SYSTEM
Tele-ophthalmology.…breaking the distance barriers
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IRIDIUM
Geography is History??
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Why Tele-ophthalmology?
• Ophthalmic diseases are mostly diagnosed by
viewing still images
• Like in radiology, ophthalmology is apt for
telemedicine
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Telemedicine levels of eye care delivery
• Primary eye care – Screening for
common eye diseases
• Secondary
• Tertiary
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In Primary eye care
• Rural internet kiosks
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Internet kiosks
• Multiple internet kiosks have been started in remote villages.
• Have internet access through WLL (Wireless Local Loop)
• Run by the local person trained for this purpose• Self sustaining• Income generation• Resource center – one of it, is the eye care service
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Expert replies to the patient by mail
PublicInternetPublic
InternetKiosk operator sends patient information through mail
ISDN/POTS
ISDN/POTS
Taking eye care to doorsteps…n-Logue: Internet Kiosks
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Taking eye care to doorsteps…n-Logue: Internet Kiosks
Video
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Secondary Care
• Vision Centers• Mobile screening unit
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Aravind Vision Centres
1. Comprehensive primary eye care in rural area
2. Exploiting IT for rural eye care service delivery
3. Tele-consultation: Vision centre technician with ophthalmologists
4. Available on a permanent basis
5. Refraction and school screening
6. Community participation
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Tele-consultationWireless connectivity
@ 4mbps
Screened by paramedic at Vision
Centre
Consultation by Ophthalmologist at
Aravind Eye Hospital, Theni
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Vision centres currently at:
Andipatti – Dec 2004 (7 KMs from Theni)
Ambasumithram–April 2004(10 KM from Theni)
Bodinayakanur – Sep 14th
2005(16 KMs from Theni)
Chinnamanur– March 20th
2006(25 KMs from Theni)
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Technology
WiFi 802.11b
Low cost
Unidirectional antenna
Line of Sight
Upto 25Kms.
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Innovation - Reducing the cost Thinking out of the box
Designing equipment for the masses
Additional Investment:• Cost of adapter rings: US$ 10 (about Rs. 500)• Now this is used in village level Vision Centres
Investment for existing fundus camera US$ 20,000 to 25,000 / Rs. 9 - 11 Lakhs
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Eye Screening going mobile!!
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• Goes to remote places• Known diabetic pts. Are collected by the local physician• Fundus images in a defined protocol are taken• Recorded in a specialized software and transmitted to the Reading Grading
Center at the Base Hospital
Mobile Screening Van
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Then the system packs the images, (DICOM Standard) and the demographic details of the patient and uploads it to the central server through satellite.
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Each set of images have set of questions based
on ETDRS criteria
Grading centre in the base hospital
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The reader can select a patient, look at each image one by one and record his
observations in the system itself.
For ease of use, the images are loaded full screen in one monitor and the input forms are loaded in another monitor
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In the second monitor, the reader enters the inputs for grading
Standard Images for comparison
Lesions are predefined for each quadrant
To track which fields
are already graded
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• Standard images used for comparison as required.• The standard images are displayed when the user clicks on the
standard image thumbnail present in the grading screen.
Standard ImageImage to be graded
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Once all the images are graded, the system automatically generates a report with possible treatments, based on the observations made.
Report
Reader can overwrite the diagnosis (if needed),add his comments and attach the critical images to be printed along with the final report
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Admin can add and maintain users
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Manage lesions
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Map treatments
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We can generate reports about the status of cases and the diagnoses
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Client Provider
DRAGON
Communicationcommunication
Provider application
B C++
MS Access
B C++
ASP.NET
SQL ServerClient Application
B C++
Archiving/ Dearchiving
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VSAT
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Images Captured in the mobile screening van
Sent to the Reading center through VSAT
Images Read and Graded using specialised software Called DRAGON (Diabetic Retinopathy Assesment and Grading Over Network)
Report regarding the severity level and further action is
Sent to the mobile van VSAT
Pt. counselled regarding further action suggested
Mobile ScreeingVan
Process takes 1 hour
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SN –TM project
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Tele-ophthalmology Models elsewhereWilmer - Digiscope
• Ensure early intervention to screen for diabetic retinopathy –empowers primary care physician
Digiscope – Wilmer-EyeTelInnovation
• Images captured by Digiscopetransmitted over Internet to the Reading & Grading Centre, Wilmer
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In Tertiary care
• Two Modes used in Consultation
– Real time or Interactive Videoconferencing
– Store & Forward
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Experts at Madurai giving his opinion to a patient examined at adifferent hospital – Real Time over Videoconference
In Tertiary Care
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Store and forward technologyWeb Based
Doctor sends patient information
through mail
Expert replies to the doctor by mail
PublicInternetPublic
Internet
ISDN/POTSISDN/POTS
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Store & Forward Mode
• Compiled medical data is stored and transmitted to another site for review.
• Rate of transmission is slower, not done in an live interactive way
• A structured software to capture and maintain patient data for subsequent consultations / reference
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• Developed here• Allows general ophthalmologists to access
speciality care• Uses e-mail• Client and Provider
eyesTalk…a store & forward software…
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Patient HistoryCase Sheet
Ophthalmic Images
Second Opinion
Client Hospital AEH Madurai Experts
Application andCommunication VC++
MS Access
Client Provider
Communication VC++
SQL Server Application
ASP.NET
FTP
Expert Opinion
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eyestalk
• Becomes a learning tool• Empowers primary care ophthalmologists to
manage all cases• Easy accessibility for speciality care
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In Tele - education
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Tele-education – 5 hospitals in the weekly Grand rounds
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Aravind - Wilmer Grand Rounds
...distance does not matter
Wilmer Eye Institute, Johns HopkinsUniversity,Baltimore, USA
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Tele-education
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In conclusion…• Telemedicine
– takes speciality care to the unreached
– empowers local community/professionals to access quality care and skills & knowledge
– Sharing knowledge and expertise
– saves time and money
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