It's not always easy to tell if you need your vision checked, especially if you already have glasses. Unless you see your eye doctor frequently, you may not know that your eyes are changing at all. Learn these subtle signs that your vision needs a tune-up so you can get your vision back on track.

Eye strain and fatigue

When your eyes feel stressed to focus, even if it's minute, they begin to feel heavy and pulled. If you notice eye strain, particularly when reading or working on your computer, it's a sign that you need to have your eyes re-checked. You can help battle this fatigue and strain by focusing your eyes on a blank wall for a few moments until the stress begins to fade. This gives your eyes a 'break' and helps relax the muscles that control focus.

Removing your glasses often

Another sign you may need your eyes re-checked is that your current glasses irritate you. You may find yourself removing them to reduce eye strain, or that taking them off makes it easier to read fine script. If you find yourself taking off your glasses more frequently than normal, setting an appointment with your eye doctor can help see if you need a different prescription than you are currently in.

Frequent headaches

A common sign that you may recognize as a need to get your vision re-checked by your eye doctor is frequent headaches that have little relief. As your muscles work to focus on things around you, your forehead and eyes become tight and stressed. This leads to those nasty headaches between your eyebrows and behind your eyes, especially when your glasses are not working for your prescription anymore. If you have headaches that don't go away, your eyesight may be to blame.

You haven't been to the eye doctor in a while

If it's been more than 2 years since your last eye doctor appointment or you are over 40, it's time for you to pay a visit. Your vision may have changed since the last time you got a prescription, and you may be suffering from even the smallest change in your eyesight. Do your eyes a favor and make sure you schedule a visit with your eye doctor even if you don't think your vision is an issue at all.

If you are experiencing signs that you need to get your vision re-checked, seeing your eye doctor is the best way to get your eyesight back on track. Learn even the most subtle signs that your vision is at stake, so you can handle an eye issue as soon as you recognize one.