Perhaps, that's one way to compare non-inferiority. Few if any primary care physicians take the time to look in ones eye (don't know how to use direct ophthalmo

Perhaps, that's one way to compare non-inferiority. Few if any primary care physicians take the time to look in ones eye (don't know how to use direct ophthalmoscope, don't have other specialized fundus cameras in clinic). Given that, if this tool forces them to take more retinal photographs of all patients, maybe we could detect diabetic disease before it is usually seen. The standard practice today is that if a patient is determined to be diabetic then they get referred to an ophthalmologist visit once a year. In that case would comparing those rates of diagnosis be useful?