The images take longer to transfer down telemedicine links than I had anticipated.  Using a 128 ISDN connection the images are taking approximately 1 megabyte per minute which is significantly longer than the theoretical transmission times.  **UPDATE JANUARY 2002** - In the first round of screening invitations were sent to 11,700 diabetic patients and 8,600 attended (attendance of 74%). We screen an average of 100 patients per week. In the first round of screening invitations were sent to 11,700 diabetic patients and 8,600 attended (attendance of 74%). We screen an average of 100 patients per week. A minimum of 4 images is taken per patient. At a resolution of 768 x 568 pixels (Sony 3 chip camera), the image sizes are 1.2 megabytes requiring a minimum memory availability of 480 megabytes per week. 