Is it feasable to have more than one PRK enhancement?

I had PRK corrective surgery on my right eye about 2 years ago. Within days, the vision in my right eye was perfect. Five months ago, I had my left eye corrected. Afterwards my vision wasn't very clear - overall I could see farther, but there was quite a strong blur on everything in my vision on my left eye. Two weeks ago, I had a PRK enhancement done. Now, 2+ weeks later, my vision is generally quite blurry still. Would I be ill-advised to request a third enhancement?