Glasses frames display up to three measurements: lens width, bridge width, and temple length. Lens width typically ranges from 40 to 60 millimeters. Bridge width ranges from 14 to 24 millimeters. Temple length ranges from 120 to 150 millimeters
Place sunglasses in front of computer screen at level angle. Rotate sunglasses 90 degrees sideways. Use polarized hidden image test card if available. Test on phone screen if no glare protection film. Flash ultraviolet light through lenses
Smart lenses correct refractive errors and provide clear vision at all distances. Also known as trifocal lenses, they eliminate multiple focus problems. Technology has developed rapidly in recent years