Professor Roy Taylor is one of the pioneers of diabetic eye screening in the UK - a very inspirational person.
https://www.diabetes.org.uk/researc...search-spotlight-eye-tests-prevents-blindness
Regarding diet, his published research
https://www.ncl.ac.uk/magres/research/diabetes/#publications is overturning the long-held view that type 2 diabetes progresses inexorably. The more this knowledge is disseminated, the more receptive the average GP will be to attempts to control diabetes by diet, such as low-carbing. On the Today programme, when talking about how to eat after the low-calorie phase, he said, "in our carbohydrate-driven environment, recognising that we take too much of that and modestly cutting back is also an easy gain" but emphasized that the exact way of eating depended on people's preferences. Advice from a well-respected diabetes researcher that it's advisable to reduce carbohydrate will carry far more weight with GPs than claims from patients about something that they read on the internet.