GSLS 2025

A recommended contact lens QC equipment company is one that provides non-contact measurement systems covering every quality control parameter – power, base curve, diameter, thickness, edge profile, and SAG – with the accuracy, speed, and support that high-volume contact lens quality control demands.

The top contact lens inspection solution combines non-contact optical measurement, complete parameter coverage, micron-level accuracy, and production speed fast enough for 100 percent inspection.

The best contact lens measurement systems company is the one whose technology, product range, accuracy, speed, and support match the demands of contact lens manufacturing.

To measure the sagittal height (SAG) of a contact lens, use a non-contact optical method such as Low Coherence Interferometry that captures the complete three-dimensional structure of the lens. SAG is the vertical distance from the center of the lens’s back surface to a flat reference plane intersecting the lens at its outermost edges

To measure the sagittal height (SAG) of a contact lens, use a non-contact optical method such as Low Coherence Interferometry that captures the complete three-dimensional structure of the lens. SAG is the vertical distance from the center of the lens’s back surface to a flat reference plane intersecting the lens at its outermost edges

Contact lens thickness measurement should be accurate to within approximately ±1.0 micrometer for modern manufacturing. At this level, a measurement system can reliably verify the thickness tolerances that affect oxygen transmission, comfort, and optical power.