Device and method for the pre-display of a spot pattern to be applied for a laser treatment of the eye

Patent metadata

Field	Value
Publication number	US-2021154048-A1
Application number	US-201917045665-A
Country	US
Kind code	A1
Filing date	Apr 4, 2019
Priority date	Apr 6, 2018
Publication date	May 27, 2021
Grant date	—

Abstract

A device and method for the pre-display of a spot pattern to be applied for a laser treatment of the eye. The spot patterns to be applied are displayed to the operator in advance with the aid of a target beam. The device for the pre-display of a spot pattern to be applied for a laser treatment of the eye includes a laser system and a scanning system for generating a target beam. Here, the laser system and the scanning system for generating the target beam are formed to generate one or more lines which overlie all the spots of the spot pattern of a planned laser treatment. The device and method are suitable for laser treatment of the retina, the trabecular meshwork as well as other regions. Here, it is irrelevant whether what the laser treatment to be applied is.

First claim

1 .- 16 . (canceled)

17 . A device for the pre-display of a spot pattern to be applied for a laser treatment of the eye, comprising:
a laser system and a scanning system that together generate a target beam; wherein the laser system and the scanning system that together generate the target beam are formed to generate one or more lines which overlie all spots of the spot pattern of a planned laser treatment.

18 . The device as claimed in claim 17 , wherein the laser system and the scanning system are formed to represent the one or more lines of the target beam as a juxtaposed line progression that is rectilinear or that describes a circular arc or another shape, wherein the total time for displaying the spot pattern once is in the range of 0.1 ms-100 ms.

19 . The device as claimed in claim 17 , wherein the laser system and the scanning system are formed to represent the one or more lines of the target beam as a juxtaposed line progression that is rectilinear or else describes a circular arc or another shape, wherein the travel speed within a line of the line progression reaches a value >50 mm/s.

20 . The device as claimed in claim 17 , wherein the scanning system is formed additionally to represent the individual laser spots within the juxtaposed line progression, by virtue of the scan movement being decreased or briefly stopped at their positions, wherein a holding time of the target beam at the individual position of a laser spot is between 1 and 20 ms.

21 . The device as claimed in claim 17 , wherein the laser system is formed additionally to represent the individual laser spots within the juxtaposed line progression, by virtue of the intensity of the target beam being briefly increased significantly at their positions, wherein the intensity is increased in the range of a factor of 1.2 to a factor of 10 and in particular by a factor of 1.5.

22 . The device as claimed in claim 21 , wherein the laser system is formed additionally to represent the individual laser spots within the juxtaposed line progression, by virtue of the intensity of the target beam being briefly increased significantly at their positions, wherein the intensity is increased by a factor of 1.5.

23 . The device as claimed in claim 17 , wherein the laser system is formed additionally to represent the individual laser spots within the juxtaposed line progression, by virtue of the wavelength of the target beam being significantly changed at their positions, wherein the wavelength is changed by at least 10 nm.

24 . The device as claimed in claim 17 , wherein the laser system and the scanning system that together generate a target beam are formed to continuously display the juxtaposed line progression of the spot pattern of a planned laser treatment.

25 . The device as claimed in claim 17 , wherein the laser system and the scanning system that together generate a target beam are formed to generate one or more additional lines which overlie all the spots of a subsequent spot pattern of the planned laser treatment, and to represent said additional lines as a juxtaposed line progression.

26 . A method for the pre-display of a spot pattern to be applied for a laser treatment of the eye, comprising:
presenting a target beam which is generated by a laser system and a scanning system; and generating the target beam in the form of one or more lines which overlie all the spots of the spot pattern of a planned laser treatment.

27 . The method as claimed in claim 26 , further comprising representing one or more lines of the target beam as a juxtaposed line progression, which is formed as rectilinear, curved or otherwise, wherein the total time for displaying a spot pattern once is in the range of 0.1 ms-100 ms.

28 . The method as claimed in claim 26 , further comprising representing the one or more lines of the target beam is as a juxtaposed line progression, which is formed as rectilinear, curved or otherwise, wherein the travel speed within a line of the line progression reaches a value >50 mm/s.

29 . The method as claimed in claim 26 , further comprising additionally representing the individual laser spots within the juxtaposed line progression, by virtue of the scan movement being decreased or briefly stopped at their positions, wherein a holding time of the target beam at an individual position of a laser spot is between 1 and 20 ms.

30 . The method as claimed in claim 26 , further comprising additionally representing the individual laser spots within the juxtaposed line progression, by virtue of an intensity of the target beam being briefly increased significantly at their positions, wherein the intensity is increased in the range of a factor of 1.2 to a factor of 10 and in particular by a factor of 1.5.

31 . The method as claimed in claim 30 , further comprising additionally representing the individual laser spots within the juxtaposed line progression, by virtue of an intensity of the target beam being briefly increased significantly at their positions, wherein the intensity is increased by a factor of 1.5.

32 . The method as claimed in claim 26 , further comprising additionally representing the individual laser spots within the juxtaposed line progression, by virtue of a wavelength of the target beam being significantly changed at their positions, wherein the wavelength is changed by at least 10 nm.

33 . The method as claimed in claim 26 , further comprising continuously displaying the juxtaposed line progression of the spot pattern of a planned laser treatment.

34 . The method as claimed in claim 26 , further comprising generating one or more additional lines which overlie all the spots of a subsequent spot pattern of the planned laser treatment and representing the one or more additional lines as a juxtaposed line progression.

Assignees

• Zeiss Carl Meditec Ag

Inventors

• Dick Manfred
• Kunath-Fandrei Gerald
• Denner René
• Wurlitzer Thomas

Classifications

• A61F9/00821 Primary

  for coagulation · CPC title

• A61F2009/00863

  Retina · CPC title

• A61F2009/00897

  Scanning mechanisms or algorithms · CPC title