What else can I do to help/prevent dry eye in the morning? I just had my PRK surgery 2 weeks ago.

I would seek a second opinion from a local refractive suergeon, if you are not satisfied with your current doctor. Irregularities of the cornea my be fixed with contact lenses, or you may require repeat PRK. You may also have a cataract that are causing your symptoms.

It is extremely common to be blurry 2 weeks after PRK. It is also common for the vision to have been better and to decrease 2 weeks after PRK. There will be a slow but irregular improvement in the vision, If you are very concerned, go back to see your doctor.

Yes, you can use sterile water to clean the eyes, but this would not be the best choice. The best is use something that is more similar to tears, which as you know contain salt. The ideal solution would be sterile saline solution, not sterile water.