As it is my son going through this DVLA renewal problem, my thoughts have been - he has T1D so caution is required, I understand that. However, as someone who was born with extremely poor eyesight, 1 eye ended up practically blind with cataract, it was always in my hands to ensure I complied with DVLA regulations, if I did not go for regular eye check ups, no one would be the wiser. Surely it is discriminating against the diabetic community by putting 3 year limit on driving licences, Drs/ opticians would be able to notify DVLA direct if anyone was a danger on the road ?