Ophthalmic apparatus

Patent metadata

Field	Value
Publication number	US-11857255-B2
Application number	US-202017066001-A
Country	US
Kind code	B2
Filing date	Oct 8, 2020
Priority date	Oct 15, 2019
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

An ophthalmic apparatus that includes an image capturing unit configured to capture a target part of a subject eye; a processor; and a memory storing computer-readable instructions therein. The computer-readable instructions, when executed by the processor, may cause the ophthalmic apparatus to execute: acquiring a first image of the target part captured at a first timing by the image capturing unit and a second image of the target part captured at a second timing different from the first timing; and combining the first image with the second image to generate one combined image of the target part.

First claim

What is claimed is:

1. An ophthalmic apparatus comprising:
an image capturing unit configured to capture a target part of a subject eye;
a processor; and
a memory storing computer-readable instructions therein,
wherein
the computer-readable instructions, when executed by the processor, cause the ophthalmic apparatus to execute:
acquiring a first image of the target part captured at a first timing by the image capturing unit and a second image of the target part captured at a second timing different from the first timing, the first image being a front image or a tomographic image, the second image being a front image when the first image is the front image and the second image being a tomographic image when the first image is the tomographic image; and
combining the first image with the second image to generate one combined image of the target part.

2. The ophthalmic apparatus according to claim 1 , further comprising a display unit configured to display images of the target part including the combined image of the target part.

3. The ophthalmic apparatus according to claim 1 , wherein
the first image is an image that is captured when an eyelid uncovers a first region of the target part,
the second image is an image that is captured when the eyelid uncovers a second region of the target part, and
the second region is different from the first region.

4. The ophthalmic apparatus according to claim 1 , wherein in the combining, the first image and the second image are combined by matching positions of a common portion captured respectively in the first image and the second image.

5. The ophthalmic apparatus according to claim 1 , wherein
the computer-readable instructions, when executed by the processor, further cause the ophthalmic apparatus to execute identifying a non-detected region in the first image, the non-detected region being a part of the target part and a region in which no image is captured, and
in the combining, a portion of the second image corresponding to the non-detected region of the first image is combined with a portion of the first image where the target part is not detected.

6. The ophthalmic apparatus according to claim 5 , further comprising an informing unit configured to inform presence of the non-detected region when an image captured by the image capturing unit includes the non-detected region.

7. The ophthalmic apparatus according to claim 6 , wherein
the informing unit is further configured to:
instruct to open an eyelid to uncover an upper part of the subject eye when the non-detected region is located in the upper part of the subject eye;
instruct to open the eyelid to uncover a lower part of the subject eye when the non-detected region is located in the lower part of the subject eye; and
instruct to open the eyelid to uncover the upper and lower parts of the subject eye when the non-detected regions are located in the upper and lower parts of the subject eye.

8. An ophthalmic apparatus configured to measure a target part of a subject eye, the ophthalmic apparatus comprising:
an image capturing unit configured to capture the target part;
a processor;
a memory storing computer-readable instructions therein; and
an informing unit,
wherein
the computer-readable instructions, when executed by the processor, cause the ophthalmic apparatus to execute:
acquiring an image of the target part captured by the image capturing unit; and
identifying a non-detected region in the image of the target part, the non-detected region being a part of the target part and a region in which no image is captured, and

the informing unit is configured to inform presence of the identified non-detected region.

Assignees

• Tomey Corp

Inventors

• Higashita Risa
• Okamoto Keiichiro

Classifications

• A61B3/0025 Primary

  characterised by electronic signal processing, e.g. eye models · CPC title

• A61B3/0041

  characterised by display arrangements · CPC title

• A61B3/102

  for optical coherence tomography [OCT] · CPC title

• G06T7/33

  using feature-based methods · CPC title

• G06T2207/10016

  Video; Image sequence · CPC title