Eyewear & Lenses
Reading Glasses, Progressives, or Computer Glasses: Choosing by the Work You Do
Three lens types, three working distances. How to pick by the way your day actually runs, plus what drugstore readers can and cannot do.
What Do the Numbers on Your Glasses Prescription Mean?
Sphere, cylinder, axis, ADD, prism, and PD: what each number on your glasses prescription means, and how COVE turns them into lenses made for you.