help-problems after retinal detachment surgery

hi everyone,
i recently had a retinal detachment
i went to the doc and the doc put a gas bubble in my eye and so far
its fine-there is no black spots.
the bubble is still in there but i still have one problem.
I have wavy central vision. Can anyone help and tell me why this is?
<img src="http://www.cuhk.edu.hk/medint/ovs/pc010522_pdt/fs_1_macular
%20problem.files/image010.jpg">
sorta looks like this but i don't know if its me but about two days
ago (as the doc said, i may see small black dots-which is scar tissue
from the retina), i saw some of that tissue and my central vision
seemed to be better, but it could be just my head messing around with
me.
anyone know why im getting this wavy central vision and if its from
the gas bubble or the scar tissue?
thank you