Related Experiment Video
Updated: Jul 15, 2026

07:01
Impression Cytology of the Lid Wiper Area
Published on: August 9, 2016
Corneal and conjunctival impression cytology in soft contact lens wearers
R P Bhatia1, Roy Lipika, R S Garbyal
1Department of Ophthalmology, Institute of Medical Sciences, Banaras Hundu Univerisity, Varanasi, India. sri_rashmi@gawab.co
Abstract:
This study assessed changes in corneal and conjunctional cytology in 25 soft contact lens (CL) wearers and compared them with matched controls. We found 80% of grade IV keratinization in CL users for more than 7 years. Keratinization was directly proportional to duration of CL use. Conjunctival cytological changes worsened with decreasing pH, whereas corneal keratinization showed no significant correlation.

