Hi,
First let me confirm that both I, and Barbara, have had our eyesight checked by an optician, during a home visit to fit Barbara with reading specs during Lockdown. He pronounced us both fit to drive (within the limits of his professional competence).
Obviously, it would not be a good idea to rely on one's
Seeing Eye dog to navigate your way to the pub and back.
But a driving licence is a useful document to have, if you need to prove your identity, or that you are old enough to drink alcohol, etc.
Many yonks ago, somewhere, somewhen, but probably within the confines of the DVLC library, in the 1970s or 1980s, I read that poor eyesight does not prevent one from holding a licence to drive a PEDESTRIAN CONTROLLED VEHICLE.
I don't know if that was the official opinion, but I have difficulty visualising somebody arriving, with a garden cultivator, at a driving test centre.

I have no difficulty imagining an S2 fitted with hand controls and steering wheel nailed to the tailgate, with the driver walking behind.
What ever, if you, or a loved one, have been medically debarred (which isn't the same as criminally disqualified), due to poor eyesight it may be worth trying to push the "Jobsworth" boundaries.
I would argue that replacing your B+E licence with whatever group covers pedestrian controlled vehicles, should be a FREE REPLACEMENT
Whatever, if the above applies to you, it might be worth a try.
602
PS, I believe that REFUSING TO TAKE AN EYESIGHT TEST, is, or was, worth one penalty point.
PPS. A provisional licence holder must be accompanied by somebody who
HOLDS a current licence for the vehicle being driven by the learner.