aesthesiometer


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Related to aesthesiometer: pinch meter

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

device used to determine sensory threshold status (see monofilament; neuraesthesiometer; see Table 1)
Table 1: Tests of sensory evaluation of the lower limb
Sensory modalityTests used to evaluate modality
Vibration128-Hz tuning fork
Rydel-Seiffer tuning fork
Biothesiometer
TouchCotton wool
Semmes-Weinstein monofilaments
Neurotip (plastic end)
PainNeurotip (metal end)
Weight of tip of hypodermic needle affixed to a 2-ml plastic syringe filled with water
Algometer
Protective painAwareness of the contact of the tip of a 10-G
Semmes-Weinstein monofilament at the majority of the plantar surface
Awareness of the contact of the tip of a 4-G
Semmes-Weinstein monofilament at the majority of the dorsal surface
Blunt/sharpNeurotip (plastic end) + Neurotip (metal end)
HotTest-tube filled with hot water
ColdTest-tube filled with cold water
Tyne of tuning fork
ProprioceptionThe examiner moves a joint and the patient identifies the direction of movement

Sensory evaluation should be carried out in a systematic manner with the results recorded on an appropriate form that is retained in the patient's case notes. All areas of the foot are tested. The patient should be unable to observe the tester's actions, and lies in a relaxed and comfortable position. Repeat tests should be made and recorded, e.g. every 6-12 months, and where possible retests should be carried out at the same time of day by the same tester.

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