Again many thanks for the responses/ suggestions.
I do think its time for a pair of cycling glasses - even if this minor swelling is not connected.
I looked into Optilabs earlier in the year and they seemed a reasonable option - at least compared to my optician!!
I don't much care for the look of the insert type but they confirmed they can do my prescription in directly glazed wrap round frame.
I had not heard of rxsport so will look into that option now, thanks.