SENSITIVITY THRESHOLD OF THE LOWER LID MARGIN IN THE COURSE OF ADAPTATION TO CONTACT LENSES

Abstract

The time course for change of touch threshold across the lower lid margin was determined throughout the adaptation periods of four patients (eight lids). The greatest changes, up to two log10 units, took place within seven and 14 days, the primary impact point being the most rapid to adjust. Lower lid margin sensitivity previous to adaptation approached and sometimes exceeded central corneal sensitivity of the same eye.