All devices intended specifically to be used for disinfecting, cleaning, rinsing or, where appropriate, hydrating contact lenses are classified as class IIb.
Tá na feistí ar fad a beartaíodh go sonrach chun lionsaí tadhaill a dhífhabhtú, a ghlanadh, a shruthlú nó, nuair is iomchuí, a hiodráitiú aicmithe mar aicme IIb.