William "Joe" Benjamin, professor of optometry at the University of Alabama at Birmingham says that eyes functions differently when people are sick. "Tear production is altered, and eyes tend to get very dry.

People may develop pink eye, conjunctivitis or other eye infections. The cornea can swell. Contacts can aggravate these symptoms." Benjamin said in a statement.

Therefore it seems a better option to wear glasses when one is feeling sick and give time for the eyes to recuperate. Benjamin advices people, for whom it is absolutely necessary to wear contacts, to clean it well or switch to daily wear lenses to avoid infection.  

Source-Medindia
SRM/M