Methods and apparatuses for determining contact lens intolerance in contact lens wearer patients based on dry eye tear film characteristic analysis and dry eye symptoms
First Claim
1. A method for diagnosing contact lens intolerance on an ocular tear film of a patient, comprising:
- illuminating the ocular tear film of the patient with a contact lens disposed on a patient'"'"'s eye with a light source;
capturing in at least one first image of the ocular tear film with the contact lens disposed on the patient'"'"'s eye, optical wave interference of specularly reflected light from the ocular tear film, when the ocular tear film is illuminated with the light source;
isolating at least one contact lens-based region of interest in the at least one first image where the contact lens is present on the ocular tear film;
converting the at least one contact lens-based region of interest in the at least one first image into at least one contact lens-based color-based value;
comparing the at least one contact lens-based color-based value to a lipid layer-contact lens layer optical wave interference model; and
determining a contact lens-based tear film characteristic of the at least one contact lens-based region of interest of the ocular tear film based on the comparison of the at least one contact lens-based color-based value to the lipid layer-contact lens layer optical wave interference model.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and apparatuses for determining contact lens intolerance in contact lens wearer patients based on tear film characteristics analysis and dry eye symptoms are disclosed. In embodiments herein, imaging of the ocular tear film is performed during contact lens wear. An analysis of the image of the ocular tear film is performed to determine one or more tear film characteristics of the ocular tear film. The tear film characteristics can be used to determine the effect or possible effect of contact lens wear on the ocular tear film, and thus be used to determine contact lens intolerance of the patient. The tear film characteristics used to analyze contact lens intolerance based on images of the ocular tear film involving contact lens wear may include dry eye symptoms, including but not limited to tear film (e.g., lipid and/or aqueous) thickness, tear film viscosity, and tear film movement rate in the eye.
143 Citations
50 Claims
-
1. A method for diagnosing contact lens intolerance on an ocular tear film of a patient, comprising:
-
illuminating the ocular tear film of the patient with a contact lens disposed on a patient'"'"'s eye with a light source; capturing in at least one first image of the ocular tear film with the contact lens disposed on the patient'"'"'s eye, optical wave interference of specularly reflected light from the ocular tear film, when the ocular tear film is illuminated with the light source; isolating at least one contact lens-based region of interest in the at least one first image where the contact lens is present on the ocular tear film; converting the at least one contact lens-based region of interest in the at least one first image into at least one contact lens-based color-based value; comparing the at least one contact lens-based color-based value to a lipid layer-contact lens layer optical wave interference model; and determining a contact lens-based tear film characteristic of the at least one contact lens-based region of interest of the ocular tear film based on the comparison of the at least one contact lens-based color-based value to the lipid layer-contact lens layer optical wave interference model. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. An apparatus for diagnosing contact lens intolerance on an ocular tear film of a patient, comprising:
-
a light source configured to illuminate the ocular tear film of the patient with a contact lens disposed on a patient'"'"'s eye; an imaging device configured to capture in at least one first image of the ocular tear film with the contact lens disposed on the patient'"'"'s eye, optical wave interference of specularly reflected light from the ocular tear film, when the ocular tear film is illuminated with the light source; and a computer control system configured to; isolate at least one contact lens-based region of interest in the at least one first image where the contact lens is present on the ocular tear film; convert the at least one contact lens-based region of interest in the at least one first image into at least one contact lens-based color-based value; compare the at least one contact lens-based color-based value to a lipid layer-contact lens layer optical wave interference model; and determine a contact lens-based tear film characteristic of the at least one contact lens-based region of interest of the ocular tear film based on the comparison of the at least one contact lens-based color-based value to the lipid layer-contact lens layer optical wave interference model. - View Dependent Claims (22)
-
-
23. A method for diagnosing contact lens intolerance in a patient, comprising:
-
illuminating an ocular tear film of the patient having a contact lens disposed on a patient'"'"'s eye with a light source; capturing in at least one first image of the ocular tear film with the contact lens disposed on the patient'"'"'s eye, optical wave interference of specularly reflected light from the ocular tear film, when the ocular tear film is illuminated; isolating at least one non-contact lens-based region of interest in the at least one first image where the contact lens is not present on the ocular tear film; and determining a non-contact lens-based tear film characteristic of the at least one non-contact lens-based region of interest in the at least one first image. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
-
-
49. An apparatus for diagnosing contact lens intolerance in a patient, comprising:
-
an illuminator configured to illuminate an ocular tear film of the patient having a contact lens disposed on a patient'"'"'s eye; an imaging device configured to capture in at least one first image of the ocular tear film with the contact lens disposed on the patient'"'"'s eye, optical wave interference of specularly reflected light from the ocular tear film, when the ocular tear film is illuminated; a computer control system configured to; isolate at least one non-contact lens-based region of interest in the at least one first image where the contact lens is not present on the ocular tear film; and determine a non-contact lens-based tear film characteristic of the at least one non-contact lens-based region of interest in the at least one first image. - View Dependent Claims (50)
-
Specification