I'm in the dark here

I've just realized that over the last few months my vision has been slightly blurry at times. It's not something that I can describe exactly - sometimes my eye's are fine, while at other times (like now) everything seems blurred around the edges.

I can't work this out. It's not like either close work, or far distances, that appear blurry. Just every now and again the whole world loses clarity. Kind of like I've just woken up. Except i haven't.

Maybe I should go see an optician. I haven't been in years.