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Limit aesthesiometry.

P J Meurs, J P De Jonge, H Van den Berg

Annals of Ophthalmology

|August 1, 1979

Summary

This study introduces a novel aesthesiometer using disposable nylon monofilaments to precisely measure minute pressures on the corneal surface, crucial for ophthalmic diagnostics.

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Area of Science:

Ophthalmology
Biomedical Engineering
Sensory Physiology

Background:

Accurate measurement of corneal sensitivity is vital for diagnosing and monitoring various ocular conditions.
Existing methods may lack precision or involve reusable components, posing infection risks.
A need exists for a sensitive, disposable device for corneal pressure threshold testing.

Purpose of the Study:

To develop and describe a novel aesthesiometer for measuring low-intensity pressures on the corneal surface.
To detail the design utilizing disposable nylon monofilaments of varying dimensions.
To establish the pressure range achievable with this new device.

Main Methods:

Design of an aesthesiometer incorporating disposable nylon monofilaments.
Utilizing monofilaments with diameters of 0.08 mm, 0.10 mm, and 0.12 mm.
Calibrating the device to exert specific pressures on a test surface.

Main Results:

The developed aesthesiometer can accurately apply pressures ranging from 0.1 to 1.0 g/mm².
The use of disposable monofilaments ensures sterile and consistent measurements.
The device effectively measures very small pressures on the corneal surface.

Conclusions:

The novel aesthesiometer provides a precise and safe method for assessing corneal tactile sensitivity.
Disposable monofilaments offer a hygienic and reliable approach for ophthalmic pressure measurements.
This device has potential applications in diagnosing neuropathies and monitoring ocular surface health.

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