In addition to the advice already given by members here, I wonder if the info I was given by the clinician at my screening a few months ago is relevant. He told me that the reason I had waited longer than a year between appointments was that people with long term diabetes diagnosis, who had several consecutive clear retinopathy screenings, were being considered for less frequent call back. I feel it is a good job that I also have a thorough annual eye check, which includes retina photographs, carried out by my local, independent, friendly, knowledgeable optometrist.