esthesiometer


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esthesiometer

 [es-the″ze-om´ĕ-ter]
an instrument for measuring tactile sensibility; tactometer.

es·the·si·om·e·ter

(es-thē'zē-om'ĕ-tĕr),
An instrument for determining the state of tactile and other forms of sensibility.
Synonym(s): tactometer
[esthesio- + G. metron, measure]

esthesiometer

(ĕs-thē′zē-ŏm′ĭ-tər)
n.
An instrument used to measure tactile sensitivity.

es·the·si·om·e·ter

(es-thē'zē-om'ĕ-tĕr)
An instrument for determining the state of tactile and other forms of sensibility.
Synonym(s): tactometer, aesthesiometer.
[esthesio- + G. metron, measure]

aesthesiometer 

Instrument for the measurement of sensitivity, especially tactile. The cornea and eyelid margins are the ocular structures measured. There are many types of aesthesiometers. The most common is that of Cochet-Bonnet (Fig. A7). It consists of a nylon monofilament of constant diameter which, depending upon its length, can exert more or less pressure. The length at which the subject responds to represents the corneal touch threshold. Others are non-contact and use a pulse of pressurised air or gas to stimulate the cornea. Note: also spelt esthesiometer. See corneal fragility; corneal hyperaesthesia; corneal sensitivity; corneal touch threshold.
Fig. A7 Cochet-Bonnet aesthesiometerenlarge picture
Fig. A7  Cochet-Bonnet aesthesiometer
References in periodicals archive ?
Regardless of the type of esthesiometer used to measure ocular surface sensitivity, it is key to understand the limitations of the instrument, the stimulus characteristics, normative values, and the repeatabilityofmeasurements made.
As stated previously, ocular surface sensitivity has been traditionally measured using the Cochet-Bonnet esthesiometer, which mechanically stimulates the ocular surface with a nylon filament [19].
Another esthesiometer, which does not use the nylon filament technique, is the Draeger esthesiometer.
Sensitivity has been tested in the lower limbs (calcaneous regions), and a reduction of tactile sensitivity was noticed using the esthesiometer 300 g.
Corneal sensation was measured using a Cochet-Bonnet filament esthesiometer in unanaesthetized rats (Luneau Ophtalmologie, France) [18].