Your vision is constantly changing, especially as you age. At a certain point, you might be able to benefit from bifocal lenses. While these lenses take a little getting used to, they'll improve your overall vision and might even help you avoid the squinting that you've had to do recently. An appointment and eye evaluation with your local optician can suggest that bifocal lenses are necessary, but you don't need to wait until your annual appointment to have your eye care expert make this discovery. There are several potential signs that you need bifocals, so schedule an appointment with your optician if these issues sound familiar.
You're Constantly Taking Off Your Glasses
A clear sign that you can benefit from bifocal lenses is that you're constantly taking your glasses off when you need to read things up close. You might be in such a habit that you hardly notice you're doing this, but try to be vigilant about noticing it. This issue is a sign that the lower half of your glasses lenses is no longer conducive to providing clarity when seeing close up. By getting bifocal lenses, you'll enjoy a secondary lens placed in the lower half of your glasses that will allow you to look down and clearly see what you're holding or reading, for example.
You're Holding Things Away From Your Body
Whether it's a magazine, an instruction manual or even a menu at a restaurant, you should be able to comfortably read the wording while holding the object comfortably in your hands. If you find that you're suddenly holding the item away from your body — and eventually extending your arms as far as possible but are still having trouble reading the wording clearly — it's a sign that your glasses prescription needs to be changed.
You're Suddenly Dealing With Headaches
One of the simplest ways to tell that your vision has changed to the point that you need a new prescription — and possibly bifocal lenses, too — is that you're suddenly dealing with headaches that you hadn't previously experienced. While you can often explain the causes of some headaches--for example, a kinked neck after sleeping awkwardly--watch for chronic headaches with no apparent cause. This is often indicative of you constantly straining your eyes to see things either close up or far away, or possibly even both. Getting prescription lenses should take away this squinting and eliminate the cause of your chronic headaches. Contact a company like All About Eyes for more information.