Dear MrHoang,
You can find a specialist in strabismus by searching the find an eyeMD section on the AAO.org website. The types of specialists that perform this surgery are usually pediatric and sometimes, neuro-ophthalmologists. I would recommend that you call the office, visit them and feel which doctor you feel most confident.
Dr. Feldman
Sandy T. Feldman, M.D., M.S.
ClearView Eye and Laser Medical Center
San Diego, California
You can find a Board Certified member of the American Academy of Ophthalmology by going to www.aao.org
The cost of surgery will vary but the biggest variable is what type of surgery is need and how many muscles need operated on.
Some cases of strabismus can be treated without surgery.
JCH MD