A method for identifying whether an eye product or product which may be in contact with the skin is likely to have an irritating effect and/or an antalgic and/or anesthetic effect, characterized in that it comprises the steps of: - disposition of a product in a container, - disposition of an earthworm in the container, - measurement (20, 30, 40) of the movement of the earthworm in the container, comprising: • acquisition of a plurality of images of the earthworm by using image acquisition means, • analysis of the acquired images for measuring the movement of the earthworm, comprising o selection of two acquired successive images, o comparison of the luminosity of each pixel of the first image with the luminosity of the corresponding pixel in the second image, o counting the number of pixels for which the luminosity has changed between the first and second images, - comparison of the number of pixels for which the luminosity has changed between the first image and the second image with a threshold, and - identifying whether said product is likely to have an irritating effect if the number of pixels, for which the luminosity has changed, is greater than a threshold, a so-called hyperactivity threshold, and/or - identifying whether said product is likely to have an antalgic and/or anesthetic effect if the number of pixels, for which the luminosity has changed, is less than a threshold, a so-called hypoactivity threshold. - disposition of a product in a container, - disposition of an earthworm in the container, - measurement (20, 30, 40) of the movement of the earthworm in the container, comprising: • acquisition of a plurality of images of the earthworm by using image acquisition means, • analysis of the acquired images for measuring the movement of the earthworm, comprising o selection of two acquired successive images, o comparison of the luminosity of each pixel of the first image with the luminosity of the corresponding pixel in the second image, o counting the number of pixels for which the luminosity has changed between the first and second images, • acquisition of a plurality of images of the earthworm by using image acquisition means, • analysis of the acquired images for measuring the movement of the earthworm, comprising o selection of two acquired successive images, o comparison of the luminosity of each pixel of the first image with the luminosity of the corresponding pixel in the second image, o counting the number of pixels for which the luminosity has changed between the first and second images, o selection of two acquired successive images, o comparison of the luminosity of each pixel of the first image with the luminosity of the corresponding pixel in the second image, o counting the number of pixels for which the luminosity has changed between the first and second images, - comparison of the number of pixels for which the luminosity has changed between the first image and the second image with a threshold, and - identifying whether said product is likely to have an irritating effect if the number of pixels, for which the luminosity has changed, is greater than a threshold, a so-called hyperactivity threshold, and/or - identifying whether said product is likely to have an antalgic and/or anesthetic effect if the number of pixels, for which the luminosity has changed, is less than a threshold, a so-called hypoactivity threshold.