Whether to wear glasses or eye contact lenses, in some cases it depends on the occasions, dress and personal adornment, personal dispositions that you would like to present, and so on and so forth. In your case of going to the meps, either wearing glasses or eye contacts lenses would do. Wearing a pair of normal eyeglasses will make people look gentle, serious and informed. As to eye contacts, they are in some ways convenient and easy to take, making you look refreshing and invigorative. On the other hand, if you wear eye contacts to the meps, you will be offered a container and some care solution for your eye contacts; if you wear glasses, there will be a container for your glasses too.