CORNEAL SENSITIVITY

If there is an indication that the 
patient may have a decrease in corneal 
sensitivity then it should be measured.  

The common technique is to use a small 
wisp of cotton.  Bring the cotton wisp 
in from the side of the patient and 
lightly touch the cornea to determine 
if there is a blink reflex.

More accurate techniques can be used such as the 
Cochet-Bonnet aesthesiometer.

Corneal sensitivity varies with age, 
eye color, corneal position, eye 
closure and decreased oxygen.