I'm looking for an online source with images of the eye disease trachoma. I'm looking preferably for resources from a credible source that have images from each stage of the disease.
According to wikipedia there are two different way to distinguish stage of the disease. One is from McCallan and one from the World health organisation (WHO). For the second one, on WHO website, you can find their grading card with eyes images. You can download it with also a little description.
Hope it helps.