WO2023017330 - TECHNIQUES FOR QUANTITATIVELY ASSESSING TEAR-FILM DYNAMICS
National phase entry:
Publication Number
WO/2023/017330
Publication Date
16.02.2023
International Application No.
PCT/IB2022/056122
International Filing Date
30.06.2022
Title **
[English]
TECHNIQUES FOR QUANTITATIVELY ASSESSING TEAR-FILM DYNAMICS
[French]
TECHNIQUES D’ÉVALUATION DE MANIÈRE QUANTITATIVE DE LA DYNAMIQUE D'UN FILM LACRYMAL
Applicants **
ALCON INC.
Inventors
BAKER, Kevin
CHOI, Hyo Won
BORJA, David
KUNNEN, Carolina
Priority Data
63/232,081
11.08.2021
US
Application details
| Total Number of Claims/PCT | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2269 | |
| EPO | Filing, Examination, Granting | 11635 | |
| Japan | Filing, Examination, Granting | 2372 | |
| South Korea | Filing, Examination, Granting | 2549 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
23,565
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
Aspects of the present disclosure provide techniques for quantitatively assessing tear-film dynamics associated with contact lenses. An example method includes projecting an image of one or more shapes on a tear film surface of the contact lens worn on the eye, capturing video data, comprising a plurality of image frames, of the one or more shapes projected on the tear film surface of the contact lens over a period of time, performing image segmentation on a plurality of reflection patterns included in the plurality of image frames, generating a plurality of maps of the tear film surface of the contact lens indicating changes to the tear film surface of the contact lens during the period of time, and outputting, based on the plurality of maps, one or more metrics quantifying the changes to the tear film surface of the contact lens over the period of time.[French]
Les aspects de la présente divulgation concernent des techniques d’évaluation de manière quantitative de la dynamique d'un film lacrymal associé à des lentilles de contact. Un procédé indicatif comprend la projection d’une image d’une ou plusieurs formes sur une surface du film lacrymal de la lentille de contact portée sur l’œil, la capture de données vidéo, comprenant une pluralité de trames d’image, d’une ou plusieurs formes projetées sur la surface du film lacrymal de la lentille de contact sur une période de temps, l’exécution d’une segmentation d’image sur une pluralité de profils de réflexion compris dans la pluralité des trames d’image, la génération d’une pluralité de cartes de la surface du film lacrymal de la lentille de contact indiquant des changement à la surface du film lacrymal de la lentille de contact pendant la période de temps, et la sortie, sur la base de la pluralité de cartes, d’une ou plusieurs mesures quantifiant les changements à la surface du film lacrymal de la lentille de contact sur la période de temps.