Hello, If I remember rightly , you are on insulin ? . Blurred vision is quite common when our Blood glucose levels are changing rapidly. Mine started blurring within a few days of starting insulin and got worse over several days , it does take a while for our sight to get back to normal in my case around a month.
In the meantime if you are worried get your eyes tested having let the Optician know about your recent diabetes diagnosis and blurred vision. A good Optician will check your eyes but not attempt to sell you glasses, if they do then walk out as in a few weeks it’s very likely you won’t need them.
I bought cheap reading glasses at a pound shop.
Enlarged my screens .
Till your vision complies with the DVLA eyesight regs, driving is out
Mostly vision returns to normal but in some cases it improves, mine did, I no longer need distance glasses.