How To Treat Squint Of Left Eye?

Hello sir,I am 25 Years old,my left eye is turned slightly,my right eye has no problame and i have no problame to see by both eyes but i feel that my left eye is weak.i visited opthomelogist nd he advise me for squient correction surgery.My question is that sir i m afraied of this surgry how much is risk associated with this surgry ?what are the side effects ?in future second surgery b needed ?should i go for surgery? plz sir guide mei have so much tansion