Although CLPC is associated with all lens types, the condition principally occurs during soft contact lens wear2and appears
to occur most frequently during extended wear.gIt is thought that CLPC is an immu- nological response to denatured tear film protein that depositsonto the lens surface during wear;S.'OJIhowever, the mechanisms for CLPC are poorly understood. Mechani- cal traurna,l2 meibomian gland dysfunc- tion13-15 and types I and IV hypersensitiv- ity'"'' all have been suggested as factors involved in the aetiology of CLPC.