Yeah, the fact that you had a lazy eye doesn't really matter. Your depth perception cues usually develop at a very young age from what I remember reading - so if you had a lazy eye growing up, even though it's 'fixed' now, your brain never developed stereo vision at the critical age due to that issue, hence your lack of depth perception/stereopsis now. But best to listen to what CASA say, don't take my word for any of this!