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For your eyes only! Revised ISO standard to measure shelf-life of contact lenses

by Sandrine Tranchard on
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Contact lens
The number of contact lens users keeps growing year after year, around the world. This is due to significant progress made in lens quality and comfort. However, it is important that the quality of contact lenses is maintained throughout their proposed shelf-life. A revised ISO standard will help to ensure that the quality of contact lenses does not deteriorate during storage and that the lenses will be safe and effective at time of use.

The global contact lens market is estimated at USD 6.1 billion and is constantly on the rise. There are different types of contact lenses; soft contact lenses, disposable daily-wear contact lenses, rigid contact lenses, etc., offering more and more comfort and convenience in their daily use.

The revised ISO standard, ISO 11987:2012, Ophthalmic optics – Contact lenses – Determination of shelf-life, will enable manufacturers to recommend storage conditions throughout the time of their storage and distribution.

The standard specifies test procedures to be applied to lenses, to measure whether the lenses have changed their properties from the time of their manufacture, once they are placed in their final packaging, up until the time they are first used by the wearer.

ISO 11987:2012 was developed by ISO technical committee ISO/TC 172, Optics and photonics, subcommittee SC 7, Ophthalmic optics and instruments. It is available from ISO national member institutes (see the complete list with contact details). It may also be obtained directly from the ISO Central Secretariat, price 50 Swiss francs through the ISO Store or by contacting the Marketing, Communication & Information department.