glasses or contacts

[marcus]

i wear glasses every day but i play hockey 2 nights a week so i put contacts in...anyways  has anyone sighted in there bow with contacts and only to realize that the next time your out shooting you are wearing glasses....after being at the range today it seemed like my shot was off a bit anyone ever have this problem just wanna hear some output???

[fishinwrench]

You might hold your head differently, thereby changing your anchor point.  Otherwise it shouldn't make any difference.