The degree of corneal surface stimulation necessary to cause a blink reflex has been measured in humans and rabbits with the platinum filament of the Larson-Millodot
aesthesiometer, and dogs and cats with the nylon filament of the Cochet-Bonnet
aesthesiometer (DE FELIPE et al., 1999; BLOCKER & VAN DER WOERT, 2001; GOLEBIOWSKY et al., 2011).
Foot sensations were evaluated using a Semmes-Weinstein monofilament (10 g) test kit (SENSELab
Aesthesiometer, Horby, Sweden).
To assess for changes in sensation or in the development of mechanical allodynia, sensitivity to tactile stimulation was measured using the Dynamic Plantar
Aesthesiometer (DPA, Ugo Basile, Italy).
Mechanical allodynia in rats was measured using the dynamic plantar
aesthesiometer (Ugo Basile, Italy), as previously described [10, 17] and following the procedures described by the manufacturer.
Investigation of limbal touch sensitivity using a Cochet-Bonnet
aesthesiometer. BrJ Ophthalmol.
Thus there is an important distinction between surface analgesia and anaesthesia which can be assessed by measuring the mechanical (touch) sensitivity of the cornea with the nylon filament of a Cochet-Bonnet
aesthesiometer, (44) the longer the filament length (in mm) that can be detected, the greater the sensitivity.