Getting your glasses tightened by the optician at your local optical shop can help your eyewear mission. In most cases, this will help prevent your glasses from falling down. But, after a specific time, sometimes after a few months, the glasses tend to loose their grip and start to slide off again. Keep in mind that soreness might also occur if your glasses are too tight on the nose, the bent temples or behind the ears. As a result, you might have to go back to the optician to loosen them up again.
Therefore, tightening your prescription glasses can be a good option, but maybe not the most convenient one as it's offers you a temporary solution only. You may risk having to return to the optician every few months for more adjustments.