Many of my friends I speak to mention looks as the reason they do not wear glasses even though I see them squinting their eyes while reading or just looking at some distant object. The same words fit for bad and cheap sunglasses. The general remarks are that with them glasses perched on the nose gives them a bookworm type of feeling or that of a nerd.
I have looked into the mirror many times over and somehow my glasses do not give me that look or feel I suppose. Glasses, including cheap sunglasses today come in different frames. They add to our facial figure and shape in different manner by their shape and size. The ophthalmologist would be the best person to get the eyes checked for health status. Thereafter a good optician would not only be able to suggest the best lens but also the frame that would suit your face.
I speak from personal experience on this aspect as the ophthalmologist, I had been to, explained to me the beauty details of the frame after the technical specifications had been dealt with. He had fitted me up with many different frames to select from. With each frame he was able to provide details of how it made my face appear. I therefore had to constantly compare his view which would be that of an onlooker with my own personal view which I received from the reflection of the mirror that he had held in front of me.
It is very important he had told me that the user gives equal importance to the shape and style of the frame as much as is given the lens. This he said was necessary, for only if the individual felt happy by looks would the person wear the glasses or cheap sunglasses regularly. Eyesight could only be helped if the person wore the glass continuously.