Abstract: Method for measuring the stability of a tear film of a patient using a device including a backlit translucent plate provided with a test chart positioned in front of at least one eye of the patient, at least one digital photographic camera connected to a computing system, and a camera lens pointing towards the patient's eye to photograph a reflection of a test chart pattern on the patient's. The method includes, from a starting time constituted by an eyelid blink, capturing a succession of images, detecting a succession of micro-movement areas in the images, and computing and storing data on the position, surface area and number of micro-movement areas of the tear film in each image, and computing and storing surface area and number of micro-movement areas of the tear film, and a measurement of the amplitude of the micro-movement areas as a function of time.
Type:
Grant
Filed:
September 11, 2020
Date of Patent:
June 24, 2025
Assignee:
E-SWIN DEVELOPPEMENT
Inventors:
Yves-Vincent Brottier, Arnaud Obin, Nelson Perrin
Abstract: An ophthalmological measuring device including an ocular measuring unit including a front face provided with a frame encircling a translucent plate the size and curvature of which are suitable for covering the ocular field of said patient, a device for providing uniform backlighting of the translucent plate, located behind the translucent plate, at least one camera equipped with an objective placed in line with a hole in the translucent plate, one or more point light sources in apertures on the edges of the translucent plate, for illuminating the eyes of the patient, and means for fastening one or more additional ophthalmological measuring devices to the translucent plate.
Type:
Grant
Filed:
September 11, 2020
Date of Patent:
April 22, 2025
Assignee:
E-SWIN DEVELOPPEMENT
Inventors:
Yves-Vincent Brottier, Arnaud Obin, Nelson Perrin