ABSTRACT
ObjectiveTo measure corneal sensitivity in normal Thai people of different ages using the Cochet – Bonnet aesthesiometer. Methods: This prospective, cross-sectional study was conducted with three hundred normal Thai subjects (600 eyes) who were divided into six groups according to their age. Corneal sensitivity was measured by using a Cochet – Bonnet aesthesiometer at the central cornea. The mean filament length of three measurements was considered to be the corneal sensitivity threshold. Results: There were statistically significant differences in the mean corneal sensitivity of the central cornea among age groups (p < 0.0001). The mean corneal sensitivity decreased with advancing age, and was significantly reduced after the age of sixty. Conclusion: The normal value of corneal sensitivity of the central cornea in the Thai population is the same as those of previous reports from other countries. Normal corneal sensitivity significantly decreased after the age of sixty.