Method and system for adjusting a laser based treatment system to an eye

A method for adjusting a scanning laser based treatment device to an eye, wherein the method comprises the following steps:

• a) using a laser based treatment device which comprises:
• a laser beam source for emitting treatment laser radiation,
• a handpiece into which the treatment laser radiation is coupled in and which comprises an adjustment structure and an outlet end for emitting the treatment laser radiation into the eye, and
• a controllable laser scanner which is arranged between the laser beam source and the outlet end and is rigidly connected to the adjustment structure in order to guide the treatment laser radiation over the eye in a scanning manner;
• b) using an OCT module with a controllable OCT scanner in order to image structures of the eye in a scanning manner, wherein the handpiece and the OCT module are freely movable relative to each other in a first state, and the handpiece comprises a OCT module coupling-in point for imaging the eye through the outlet end;
• c) imaging the adjustment structure of the handpiece using the OCT module and ascertaining a first relative position between the adjustment structure of the handpiece and the OCT scanner;
• d) imaging a specified structure of the eye using the OCT module through the handpiece and the outlet end and ascertaining a second relative position between the specified structure and the OCT scanner;
• and
• e) generating signals in order to actuate the laser scanner on the basis of the first and the second relative position.

A method for adjusting a scanning laser based treatment device to an eye, wherein the method comprises the following steps:

• a) using a laser based treatment device which comprises:
• a laser beam source for emitting treatment laser radiation,
• a handpiece into which the treatment laser radiation is coupled in and which comprises an adjustment structure and an outlet end for emitting the treatment laser radiation into the eye, and
• a controllable laser scanner which is arranged between the laser beam source and the outlet end and is rigidly connected to the adjustment structure in order to guide the treatment laser radiation over the eye in a scanning manner;
• b) using an OCT module with a controllable OCT scanner in order to image structures of the eye in a scanning manner, wherein the handpiece and the OCT module are freely movable relative to each other in a first state, and the handpiece comprises a OCT module coupling-in point for imaging the eye through the outlet end;
• c) imaging the adjustment structure of the handpiece using the OCT module and ascertaining a first relative position between the adjustment structure of the handpiece and the OCT scanner;
• d) imaging a specified structure of the eye using the OCT module through the handpiece and the outlet end and ascertaining a second relative position between the specified structure and the OCT scanner;
• and
• e) controlling the laser scanner on the basis of the first and the second relative position.

A system for laser treatment which comprises:

• a laser treatment device which comprises:
• a laser beam source for emitting treatment laser radiation,
• a handpiece into which the treatment laser radiation is coupled and which comprises at an adjustment structure and an outlet end for emitting the treatment laser radiation into the eye, and
• a controllable laser scanner which is arranged between the laser beam source and the outlet end and is rigidly connected to the adjustment structure in order to guide the treatment laser radiation over the eye in a scanning manner;
• an OCT module with a controllable OCT scanner configured to image structures of the eye in a scanning manner, wherein the handpiece and the OCT module are freely movable relative to each other in a first state, and the handpiece comprises a OCT module coupling-in point for imaging the eye through the outlet end, and
• a control device, which is designed:
• to control the OCT module to generate an image of the adjustment structure provided on the handpiece using the OCT module and to ascertain from the image of the adjustment structure a first relative position between the adjustment structure and the OCT scanner;
• to control the OCT module to generate an image of a specified structure of the eye through the handpiece and the outlet end and to ascertain from the image of the adjustment structure a second relative position between the specified structure and the OCT scanner, and
• to generate signals in order to actuate the laser scanner on the basis of the first and the second relative position.