I got a LASIK surgery 6 months ago and now my vision is getting blurry. Any suggestions?

From your symptoms, it sounds like you are suffering from dry eyes.  It is likely that the climate change from your move is affecting your eyes and vision.  I would recommend that you use preservative free artificial tears every 3-4 hours.  You can also consider taking omega 3 fish oil supplements and performing hot compresses twice a day.  A -0.25 diopter of astigmatism should not significantly blur your vision and therefore it is not likely that wearing glasses will solve your problems.  

-0.25 is a very minor amount of astigmatism which by itself would not cause a sense of blurry vision. Dryness is the most likely reason for your blurriness. The environment you are now in may be very different from your home country. I would recommend Omega-3 fish oil pills 3 grams orally per day. It works wonders in most cases of dryness.