you carry your glasses in your pocket, trekkie? I wouldn't dare that. I'd be afraid to break them. A mole has hawkeyes, compared to me...
Reading-glasses from a discount gift and nick-nack shop!
And somehow a pair of those last about a year in my 'care' -even if used every day

That's more mileage than any pair of sun-glasses I've ever had and carried around in protective casings!!!
