: Modern retailers use 3D virtual try-on tools that allow you to see how frames look on your face via your webcam.
: Look at the inside temple arm of your current, best-fitting glasses. You'll see three numbers (e.g., 52-18-140) representing lens width , bridge width , and temple length . Match these as closely as possible to new frames. buy designer prescription glasses online
: Your prescription must include Sphere (SPH) , Cylinder (CYL) , and Axis values. : Modern retailers use 3D virtual try-on tools