Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Strabismus surgery is surgery on the extraocular muscles to correct the misalignment of the eyes. With approximately 1.2 million procedures each year, extraocular muscle surgery is the third most common eye surgery in the United States. Strabismus surgery is a one day procedure. The patient only spends few hours in the hospital with minimal preoperative preparation. The average duration of the surgery is variable according to the number of muscles operated. On average, every muscle operated takes 10-15 minutes. In case of re-operations it may take longer. After surgery, pain is not significant. The patient should expect some soreness and redness, however pain killers are rarely needed. Again, in cases of re-operations, more pain is expected. Resection of the muscles is more painful in the post operative period than recession. It also leaves redness that lasts longer and may cause some vomiting in the early post operative period.