Charlie
Don't know exactly where you are, but if you're anywhere near Manchester, try the following gentleman:
Dr Martin Hudson
'Grasmere'
Goostry
Nr Holmes Chapel
Cheshire
Tel: 01477 532527
Nice chap, and will do the opthalogical bit for you, (and give honest answers), for £30.
(He's also the doc for Airtours)
ariel