Let's take a look at the where's, why's and how's of measuring segment heights for lined bifocal and trifocal lenses. | Laramy-K OpticianWorks

9.5K views · 40 reactions | Upgrade your bifocals or trifocals and take your vision to the next level with progressive lenses. Progressives are a singular lens that correct for far (top of lens), medium (middle of lens), and near (bottom of lens) fields of vision. From closely reading a book to cruising down the road, do it all in your progressive Pair. | Pair Eyewear | Facebook