Passport photos can have glasses on as long as the glasses are not dark like sun glasses.
QUOTE
What pose should the photos show?
The photo should show a clear, front view, full face of the customer. The customer should be in normal street attire, without hat or dark glasses against a plain white or off-white background. The customer should have a natural expression, mouth closed, and eyes open and looking directly ahead. Photos in which the face of the person being photographed is not in focus will not be accepted.
Can sunglasses or tinted glasses be worn?
Dark glasses or nonprescription glasses with tinted lenses are not acceptable unless you need them for medical reasons. A medical certificate may be required.
http://www.travel.state.gov/passport/guide/faq/faq_881.htmlExamples:

http://www.travel.state.gov/passport/guide...uality_876.html