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.
PRK averages 6 months of fluctuating vision before settling in. Let the eyes continue to heal and continue your follow-ups. Healing with PRK is something that takes time and patience.
