Can I lose my best corrected vision (best vision with glasses or contact lenses)? How likely is that?
Possibly. Published reports indicate up to 1% of patients may end up with a small decrease in their vision. For example: best corrected pre-operative vision of 20/20 could drop to 20/30, 20/40, or worse). For reference purposes: driving without glasses requires about 20/40 vision, while reading requires about 20/50 vision.