Corneal and conjunctival sensitivity in intolerant contact lens wearers

The role of the upper tarsal conjunctiva in ocular surface discomfort is unknown; however the upper lid may contribute to symptoms of dryness and discomfort in ocular surface disease and in contact lens (CL) wear. There is increasing evidence for the role of the conjunctiva in contact lens discomfort (reviewed in Stapleton et al.). Although contemporary CL wear has minimal impact on corneal sensation threshold, there is an indication that it may affect the conjunctival threshold. The aim of this preliminary work was to measure the threshold of the tarsal conjunctiva in CL wearers who had discontinued wear due to discomfort.