eyeglass eyeglass /ˈaɪˌglæs/

noun

1. Lens for correcting defective vision in one eye; held in place by facial muscles  ( eyeglass , monocle )
   lens for correcting defective vision in one eye; held in place by facial muscles
     The gentleman adjusted his monocle to get a better view.
   The gentleman adjusted his monocle to get a better view.