hi, wear glasses. do you? 
YEs, Glasses, also known as eyeglasses or spectacles, are devices consisting of glass or hard plastic lenses 
are plastic better 
They each have advantages.   What matters is that they are mounted in a frame that holds them in front of a person's eyes,
ah. do you know if plastic frames are better than wire?
I think so.   Frequently wire frames may use a strap to prevent the glasses from falling off during movement or sports.
i've never used those. are you nearsighted or farsighted?  
Nearsighted.    I have special lenses which change to  Sunglasses that allow better vision in bright daylight,