THIS PERSON DID NOT INCLUDE THE FULL QUESTION
Here are the details he left out...
Many people in the United States wear corrective lenses (contacts or glasses). In this activity, you will come up with ways to study this population, make predictions based on the study, and compare multiple random samples.
Since this survey is about corrective lenses, (how many people need them) it would not be accurate at all to go only to eyeglass stores and not the general population as its presumed if you are at an eyeglass store you already need them.
SO THE ANSWER IS NO