For scratches and coating damage, ordinary room light can hide the useful evidence. Classification becomes easier when the lens is dry, the light source is singular, and the inspection includes the edges and hardware.
The safe goal with scratched lens …
An anti-reflective lens surface can appear to peel when one or more very thin functional layers lose uniform adhesion or integrity. The wearer sees a fixed boundary—often a patch, island, edge, web, or iridescent change—because intact and altered areas reflect …
With cloudiness after cleaning, a stronger cleaner is not a better diagnosis. One controlled wash and a dry side-light inspection preserve more information than a sequence of solvents, polishes, and improvised fixes. If cloudiness after cleaning interferes with normal clarity, …
Keyhole and saddle describe bridge shapes, not guaranteed fit categories. A keyhole bridge often has a narrower upper cutout and contact lower or along selected side surfaces. A saddle bridge is generally intended to distribute contact over a broader area …
A rigid molded bridge with fixed temples asks the face to accommodate more of the frame’s geometry. Adjustable nose pads and professionally shapeable temples offer more controls, but they also introduce more contact points and potential drift. Neither system makes …
Two frames can have the same lens width and behave differently around high cheekbones. A deep lens shape with a low lower rim may contact the cheeks as the wearer smiles; a shallower or differently tilted design may preserve movement …
Viewed from the side, many properly fitted glasses are not perfectly vertical. The bottom of the frame may sit somewhat closer to the cheeks than the top sits to the brow. That relationship is commonly called pantoscopic tilt. Consumers notice …
No. The temple tip ends before it can follow the ear, or the bend sits on top of the ear. Continue to the true-length branch.
Yes. The temple reaches behind the …
The number printed inside a temple arm is useful, but it cannot tell you whether the arm bends in the right place for your ear. Eyeglass arms that are too long may slide forward, extend far beyond the ear, or …
Yes. A visible gap under part of an eyeglass bridge can be normal. Noses and molded bridges are three-dimensional shapes; they do not need to touch along every visible millimeter. Continue …