Another factor to consider when choosing post-Lasik sunglasses is fit.
Fit matters because sunglasses that fit right are comfortable to wear. Generally, people are more likely to use sunglasses when needed if they are comfortable to wear.
To choose sunglasses that fit right, use the “three-touch rule.” The frame should touch the head at only three points - the nose and the top of each ear.
The bridge of the sunglasses should fit comfortably over your nose without being too loose or tight. Also, the temples (arms) should extend straight back to your ears, fitting securely behind your ears without being too tight.
When sunglasses fit loosely, they tend to slip off the face. Then comes the stress of always needing to push them back in place. On the other hand, when sunglasses fit tightly, they exert pressure on your face. In addition to being uncomfortable, the pressure leaves unsightly marks on the face.
The stress of constantly readjusting loosely fitting sunglasses or the discomfort of tightly fitting sunglasses is a turn-off. This may make you not wear your sunglasses when you need to. However, when you get the fit right, your sunglasses will be comfortable to wear, and you’re more likely to wear them.