Little bit of background. I started wearing glasses at the age three. By the time I was 50 I was wearing tri-focals, which did not work very well. Dr. Wang performed Lasik surgery and corrected by distance and mono vision. I only needed reading glasses with 1.0 strength to read perfectly. My vision gradually deteriorated with age to the point where I needed 2.5 readers and distance was no longer clear. Dr. Wang performed Lasik a second time 11 years later. Now I have perfect vision once again! I could not be happier with the results. Dr. Wang and his entire staff are very kind, professional, helpful, and extremely skillful!