Eyewear, explained
The numbers stamped inside a temple arm — something like 52□18-140 — describe the frame’s physical dimensions, not the prescription. The first figure is lens width, the second is bridge width, and the last is temple (arm) length, all in millimetres. They tell you how the frame is built, not how well you’ll see through … Read more
About what you read here. Everything on The Designer Glasses is general information and our own editorial opinion. We research carefully and we say when the evidence is unclear, but we can be wrong, things change, and no article can know your particular situation. Please do your own research and make your own judgement rather than treating anything here as the final word. This is not medical advice, not a diagnosis, and not a substitute for speaking to an optometrist, optician or eye doctor about your own eyes, vision and eyewear. We are writers and researchers, not clinicians. We do not recommend prescription treatments or give doses. If something is painful, getting worse, or worrying you, please talk to a professional — going early is not an overreaction.