Ring halometer system and method for quantifying dysphotopsias

Patent metadata

Field	Value
Publication number	US-12478248-B2
Application number	US-202217661902-A
Country	US
Kind code	B2
Filing date	May 3, 2022
Priority date	May 5, 2021
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

A ring halometer system configured to quantify dysphotopsias in a patient. The system includes a white screen and a first light source configured to emit a glare source from the white screen. The glare source is configured to form a veil of light visible to the patient when the glare source interacts with an optical surface of the eye of the patient. The system also includes a second light source configured to project a light ring with varying luminance concentric with the glare light source on the white screen, and a controller coupled to the second light source configured to adjust a size of the light ring. The system may also include an electronic device configured to determine a level of bothersomeness of the dysphotopsias experienced by the patient based on the size of the light ring.

First claim

What is claimed is:

1 . A ring halometer system configured to quantify dysphotopsias in a patient, the system comprising:
a white screen; a first light source configured to emit a glare source from a plane of the white screen, the glare source configured to form a veil of light visible to the patient when the glare source interacts with an optical surface of the eye of the patient; a second light source configured to project a light ring concentric with the first light source on the white screen; and a controller coupled to the second light source, the controller configured to adjust a size of the light ring.

2 . The system of claim 1 , further comprising an electronic device coupled to the first light source and the second light source.

3 . The system of claim 2 , further comprising a user input device of the electronic device configured to record an indication from the patient when the size of the light ring is substantially equal to a size of the veil of light.

4 . The system of claim 3 , wherein a memory device of the electronic device comprises instructions which, when executed by a processor of the electronic device, cause the processor to determine a level of bothersomeness of the dysphotopsias experienced by the patient based on the size of the light ring.

5 . The system of claim 1 , wherein the first light source comprises a light-emitting diode (LED).

6 . The system of claim 1 , wherein the second light source is a projector.

7 . The system of claim 1 , further comprising a lux meter configured to automatically calibrate an illuminance of the light ring projected on the white screen by the second light source.

8 . The system of claim 1 , further comprising a lux meter configured to automatically calibrate an illuminance of the glare source emitted by the first light source.

9 . The system of claim 1 , further comprising a lux meter configured to check a calibration of an illuminance of the light ring projected on the white screen by the second light source.

10 . The system of claim 1 , further comprising a lux meter configured to check a calibration of an illuminance of the glare source emitted by the first light source.

11 . The system of claim 10 , further comprising a controller configured to adjust the illuminance of the glare source.

12 . The system of claim 1 , wherein an illuminance of the glare source emitted by the first light source is in a range from approximately 1 lux to approximately 100 lux.

13 . The system of claim 1 , wherein a luminance of the light ring emitted by the second light source is in a range from approximately 0.5 cd/m 2 to approximately 110 cd/m 2 .

14 . The system of claim 1 , light ring is a white ring.

15 . The system of claim 1 , light ring is a color ring.

16 . The system of claim 1 , wherein the first light source has a spectrum filter to select a desired emitting spectrum of the glare source.

17 . The system of claim 1 , wherein the second light source is configured to project at least one real scene image on the screen.

18 . The system of claim 17 , wherein the first light source comprises a plurality of light sources configured to emit light from light source areas of the natural scene image.

19 . A computer-implemented method of quantifying dysphotopsias in a patient, the method comprising:
emitting, from a first light source, a glare source generating a veil of light in a retina of the patient; displaying, with a second light source, a light ring on the white screen concentric with the glare source; varying a diameter of the light ring displayed on the white screen; receiving an indication, from the patient, in response to the diameter of the light ring being substantially equal to a diameter of the veil of light.

20 . The method of claim 19 , wherein the varying of the diameter of the light ring comprises increasing the diameter of the light ring.

21 . The method of claim 19 , wherein the varying of the diameter of the light ring comprises decreasing the diameter of the light ring.

22 . The method of claim 19 , further comprising quantifying a level of bothersomeness of the dysphotopsias experienced by the patient based on the diameter of the light ring following the receiving of the indication from the patient.

23 . The method of claim 19 , further comprising:
measuring, with a light meter, an illuminance of the glare light source from the first light source; and adjusting the illuminance of the glare light source.

24 . The method of claim 19 , further comprising:
measuring, with a light meter, an illuminance of the light ring on the white screen; and adjusting the illuminance of the light ring.

25 . The method of claim 19 , further comprising: measuring, with a light meter, an illuminance of the glare source from the first light source; and
checking if a calibration of the illuminance of the glare source is correct.

26 . The method of claim 19 , further comprising:
measuring, with a light meter, an illuminance of the light ring on the white screen; and checking if a calibration of the illuminance of the light ring is correct.

27 . A computer-implemented method of quantifying dysphotopsias in a patient, the method comprising:
viewing a glare light source emitted from a white screen, the glare light source generating a veil of light in the patient's retina; viewing a light ring on the white screen concentric with the glare light source; and adjusting a size of the light ring until a diameter of the light ring is substantially equal to a diameter of the veil of light.

28 . The method of claim 27 , further comprising entering a selection, with a user-input device, in response to the diameter of the light ring being substantially equal to the diameter of the veil of light.

29 . The method of claim 27 , wherein the adjusting the size comprises increasing the diameter of the light ring until the light ring is visible from the veil of light.

30 . The method of claim 27 , wherein the adjusting the size comprises decreasing the diameter of the light ring until the light ring disappears into the veil of light.

Assignees

• Amo Groningen Bv

Inventors

• Faria Ribeiro Miguel
• Jenkins Sanchez Mark
• Alarcon Heredia Aixa
• Rosen Robert

Classifications

• A61F2/16

  Intraocular lenses · CPC title

• H05B45/12

  using optical feedback · CPC title

• A61B3/063

  for testing light sensitivity, i.e. adaptation · CPC title

• A61B3/0008 Primary

  provided with illuminating means (A61B3/117, A61B3/14 take precedence) · CPC title

• A61B3/024 Primary

  for determining the visual field, e.g. perimeter types · CPC title