Great question and one in which you may get different answers from different surgeons.
What I can share with you is that the vast majority of cases of LASIK procedures are done with both eyes on the same sitting.
The fact is that LASIK has got a high safety record and low infection rates. Most surgeons are comfortable with performing LASIK in this manner.
The advantages of having both eyes done at the same time are that it permits both eyes to recover along similar timeframes and thus minimises the time the patient has to be away from their work commitments.
Some patients may request for one eye to be done at different days, and we are happy to accommodate their wishes.