Thanks for your replies. I'm a bit more worried now than i was before.
Taz - thinking about it, its definitely blurred, not double, i'm not seeing two of everything just feel as though things are not in focus properly. I'm long sighted so i wear glasses for reading and other close work but my long distance is fine. At the moment though my long is nearly as bad as my short.
I had an mri done on my head about a year ago and all was normal, (strangely enough!!), told the consultant then i was having some vision problems but nothing sinister found so i just put it down to another menopause symptom and it tends to only last a couple of days normally.
I'll give my optician a ring tomorrow and make an appointment asap.
Thanks for your help, let you know what happens.
Delilah x