Ophthalmic apparatus, and treatment site measuring method for the apparatus

Patent metadata

Field	Value
Publication number	US-9301681-B2
Application number	US-201314414700-A
Country	US
Kind code	B2
Filing date	Jul 15, 2013
Priority date	Jul 13, 2012
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

The present invention relates to an ophthalmic apparatus and to a treatment site measuring method for the apparatus. The ophthalmic apparatus according to the present invention comprises: a first image unit for capturing the lower region of a retina so as to generate an image of the captured retina; a second image unit for capturing the local region of the retina indicated by a surgical operator so as to generate an image of the captured local region of the retina; and a control unit for mapping the image of the local region of the retina generated by the second image unit to the image of the retina generated by the first image unit based on the image of the retina generated by the first image unit.

First claim

What is claimed is:

1. An ophthalmic apparatus measuring a treatment location of a retina, comprising:
a first image unit which performs photographing up to a lower region of the retina and generates a captured image of the retina;
a second image unit which photographs a local region of the retina viewed by an operator and generates a captured image of the local region of the retina; and
a control unit which maps the image of the local region of the retina generated by the second image unit to the image of the retina generated by the first image unit based on the image of the retina generated by the first image unit.

2. The ophthalmic apparatus of claim 1 , further comprising:
an image analysis unit which analyzes the image of the retina generated by the first image unit; and
a memory unit which stores the image of the retina analyzed by the image analysis unit.

3. The ophthalmic apparatus of claim 2 , wherein the image analysis unit analyzes a specific region of the image of the retina and sends the analyzed region to the memory unit.

4. The ophthalmic apparatus of claim 3 , wherein the specific region of the image of the retina comprises macula flava.

5. The ophthalmic apparatus of claim 2 , further comprising a display unit which displays the image of the retina and the image of the local region of the retina generated by the first image unit and the second image unit.

6. The ophthalmic apparatus of claim 5 , wherein:
grids are displayed in the image of the retina displayed on the display unit, and
the image of the local region of the retina is mapped to a corresponding grid region of the image of the retina.

7. The ophthalmic apparatus of claim 5 , wherein the first image unit comprises a fundus oculi image unit which captures and generates the image of the retina.

8. The ophthalmic apparatus of claim 5 , wherein the second image unit comprises a view finder viewed by an operator.

9. A method of measuring, by an ophthalmic apparatus measuring a treatment location of a retina, a treatment location, the method comprising steps of:
(a) generating an image of a fundus oculi region of the retina by photographing the fundus oculi region of the retina;
(b) generating an image of a local region of the retina by photographing the local region of the retina viewed by an operator; and
(c) mapping the image of the local region of the retina to a location corresponding to the image of the fundus oculi region of the retina based on the image of the fundus oculi region of the retina.

10. The method of claim 9 , wherein:
the ophthalmic apparatus comprises an image analysis unit which analyzes the fundus oculi region of the retina, and
the step (a) comprises analyzing and extracting, by the image analysis unit, a specific region of the fundus oculi region of the retina.

11. The method of claim 10 , wherein:
the ophthalmic apparatus comprises a memory unit which stores the image of the fundus oculi region of the retina analyzed by the image analysis unit, and
a step of storing information about the specific region analyzed by the image analysis unit is further included between the step (a) and the step (b).

12. The method of claim 11 , wherein the information about the specific region comprises at least one of macula flava and blood vessel locations of the retina.

13. The method of claim 10 , wherein the ophthalmic apparatus further comprises a display unit which displays the image of the fundus oculi region of the retina and the image of the local region of the retina.

14. The method of claim 13 , wherein the step (c) comprises a step of displaying grids in the image of the fundus oculi region of the retina displayed on the display unit and mapping the image of the local region of the retina to a corresponding grid region location in the image of the fundus oculi region of the retina.

15. The method of claim 13 , wherein the ophthalmic apparatus further comprises a fundus oculi image unit which captures and generates the image of the fundus oculi region of the retina.

16. The method of claim 13 , wherein the ophthalmic apparatus further comprises a view finder which captures and generates the image of the local region of the retina in the step (b).

Assignees

• Lutronic Corp

Inventors

• Ha Tae Ho
• Kim Ki Chan

Classifications

• G06T2207/30041

  Eye; Retina; Ophthalmic · CPC title

• A61B3/0058 Primary

  for multiple images · CPC title

• A61B3/12 Primary

  for looking at the eye fundus, e.g. ophthalmoscopes (A61B3/13 takes precedence) · CPC title

• A61B3/1233

  for measuring blood flow, e.g. at the retina · CPC title

• G06T7/30

  Determination of transform parameters for the alignment of images, i.e. image registration · CPC title