It is normal for you to get the blurred vision because of anesthesia. However, if it is not disappeared within a week, you'd better go to see the doctor and have the check on the eyes. There are many side effect of taking the anesthesia. In the short term, the side effects are vomiting, fatigue, blurred vision, dizziness, sore throat, unusual dreams and mood swings. In the long term effects, it may damage the brain. Thus, the amount quantity of the anesthesia should be in the normal state. If you still get blurred eye sight over one week after you get the anesthesia, you should go to the hospital to have a check.