My sis-in-law had steroids in her asthma inhalers and she is about to have her third baby. All of her kids are perfectly healthy.
If you are concerned about any risks, speak with the optomologist (spelling?) about what they know. If they know nothing, speak with your OBGYN. Your best bet, if you're worried, is to wait until after your surgery and steroid treatment to get pregnant.
I have to take large amts of steroids daily during all my pregnancies and life. My babies turn out just fine. Shouldn't be any harm to them at all.