Dr. Lam is the best! She was so patient when refracting. Her attention to detail has resulted in the best corrected vision that I have had in years. I am dealing with vitreous matter broken loose and floating, wrinkled retinas, and seeing double. The prescription she wrote is so much better than any of the others I've had during the 13 years we've been in AZ. She is especially good at adjusting the prism I need for the double vision. I've been wearing glasses for about 60 years and her refraction was the most thorough in all those years. Thank you Dr. Lam!