Making the switch from regular bifocals to progressive lenses has never been easier or more affordable with our Tek Spex 8001 series of no-line readers! Traditional bifocals have a clear upper lens for regular distance viewing and a distinct zone of magn
I have had very good results for years now, with small as possibleglasslens, minimal but full frame, single line bifocal glasses. This pair of glasses is kept with my observing kit, and isnotfor everyday wear. For telescoping and a little hiking and fishing streams. Glasses on telescoping,...