The dvla will get you attend for regular eye exams and to have a visual field test (estermann) to ensure your peripheral vision meets the required standards for driving. This is usually only an issue if you have advanced glaucoma. I read somewhere recently that Specsavers have got a the contract to perform these tests for the DVLA.
Good luck
Specsavers have an excellent machine for testing Field Vision....my only complaint is, it ain't designed for ladies with short legs and big boobs...lol
I had it done yesterday and have to go back next week for another go at it. I missed too many clicks to get a true reading.