I know I announced my brief hiatus, but I wanted to talk a little bit about frame adjustment and its importance to the wearer.
If your eyeglasses are not fitting properly on your face, not only are they uncomfortable, but it also adversely affects the quality of your vision through a variety of ways.
If you have any astigmatism correction, and your glasses are crooked, then you are getting the incorrect prescription. As discussed in my previous article on correction found here, astigmastism correction is set on a specific axis. If the glasses are crooked you have changed the angle of that astigmatism correction on each eye, negatively impacting the clarity of your vision.
Glasses are made to sit on your face at a certain distance from the eye. If that distance is elongated, you are changing the magnitude of the correction. So, as glasses slide down your nose, you actually make your lenses less nearsighted, or more farsighted. Whatever your real correction is, this is something you want to avoid.
Glasses need to have a certain amount of tilt towards your cheeks. This provides the best clarity. If your glasses end up too tilted towards the cheeks, or not enough, then you reduce your clarity again.
Progressives compound all of these issues. If a progressive is worn crooked, then you end up with one eye looking through the distance, while the other looks through the intermediate. AND your astigmatism correction is also wrong at the same time!
So what’s the lesson here? You take your car in for a tune up and oil change every 5-10,000 miles, why don’t you take your glasses in for a tune up too? A good rule of thumb is every 3 months or so. The frequency may vary based on your local weather. Hotter climates tend to mean frames will stretch out and get crooked faster. Going in frequently also means that your optican can tighten all screws, give the frames an ultrasonic bath to remove makeup and sweat build-up, and your glasses can be inspected for scratches or warranty issues.
Your optician is your friend. Visit him or her frequently!