01 · DUST FIRST
Do not rub a dusty lens while it is dry
If dust or small particles remain on the lens, wiping can drag them across the surface.
Repeated rubbing in this condition can contribute to fine scratches.
When possible, rinse particles away under running water before wiping.
Remove loose particles before wiping because sand, dust and cosmetic debris can include material harder than the coating. When grit is trapped between cloth and lens, pressure turns cleaning into abrasive contact. Rinsing first, when practical, reduces the amount of hard debris at the interface.
02 · WATER
Use cool or lukewarm water
Very hot water can stress lens coatings and frame materials.
For routine cleaning, cool or lukewarm water is the safer choice.
Water temperature matters because the substrate and its hard coat, anti-reflective stack and top coat are different materials. Excessive heat and large temperature changes can add thermal stress; lukewarm water is normally sufficient for routine cleaning.
03 · CLEANER
Use a small amount of a mild cleaner when needed
For skin oils or cosmetics, use a small amount of a mild neutral cleaner that is suitable for lenses and the frame.
Avoid strong household glass cleaners and solvents such as acetone. Alcohol-based products may be suitable for some lenses, so use products specifically intended or approved for spectacle lenses.
Stronger cleaner is not automatically better. Use a mild near-neutral liquid cleaner or a product confirmed as suitable for spectacle lenses, and avoid assuming that household glass cleaner, acetone or other strong solvents are compatible with the lens, frame finish or bonded parts.
04 · CLOTH
Use a clean microfiber cloth
A lens-specific microfiber cloth is generally appropriate.
If the cloth itself is loaded with oil and dust, it can smear the lens or move particles across the surface again.
Wash or replace the cloth periodically.
With microfiber, cleanliness matters as much as fibre type. A cloth already loaded with oil and grit can smear contamination back onto the lens or drag particles across it, so it should be washed, rinsed well and kept free of fabric-softener residue.
05 · PRESSURE
More pressure does not mean better cleaning
It is better to remove debris first and wipe lightly than to scrub repeatedly with strong pressure.
Repeated friction can accumulate on coated surfaces.
More pressure does not produce proportionally better cleaning. Once contamination is loosened, light wiping reduces cumulative friction and also reduces the chance of twisting rimless or thin metal mountings during cleaning.
SOLUTION GUIDE
A basic cleaning sequence
Rinse loose particles from the lens under running water.
Use only a small amount of a product suitable for the lens and frame.
Do not leave cleaning residue on the surface.
Use light pressure rather than aggressive rubbing.
GLANOS LENS CHECK
Good lens care is not about rubbing harder
Remove particles first and minimize friction.
CAUTION
Do not routinely use tissues or clothing as lens cloths
The problem is not only the material itself; trapped particles and repeated friction can create fine surface damage.
GLANOS EYEWEAR
There is a reason glasses feel uncomfortable.
lens cleaning · eyeglass care · microfiber cloth · lens coating · eyeglass lenses