Wavefront sensorless adaptive optics for optical coherence tomography guided femtosecond laser surgery in the posterior eye

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dc.identifier.uri http://dx.doi.org/10.15488/10281
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/10354
dc.contributor.author Zabic, Miroslav
dc.contributor.author Matthias, Ben
dc.contributor.author Hahn, Jan
dc.contributor.author Heisterkamp, Alexander
dc.contributor.author Meyer, Heiko
dc.contributor.author Ripken, Tammo
dc.date.accessioned 2020-12-08T15:27:07Z
dc.date.available 2020-12-08T15:27:07Z
dc.date.issued 2019
dc.identifier.citation Zabic, M.; Matthias, B.; Hahn, J.; Heisterkamp, A.; Meyer, H.; Ripken, T.: Wavefront sensorless adaptive optics for optical coherence tomography guided femtosecond laser surgery in the posterior eye. In: Proceedings of SPIE 10886 (2019), 1088603. DOI: https://doi.org/10.1117/12.2509363
dc.description.abstract Surgery with fs-laser in the posterior part of the eye could be useful for separation of tractional epiretinal membrane and vitreous floaters treatment. However, focus degradation occurs near the retina due to induced aberrations by cornea and lens. To overcome this issue, adaptive optics with wavefront sensor and wavefront modulator can be utilized. We demonstrate an alternative concept for image guided femto second laser (fs-laser) surgery in the posterior eye with wavefront sensorless adaptive optics (WFSLAO). Our laboratory setup consists of an 800 nm fs-laser and a superluminescent diode (SLD) with 897.2 nm central wavelength. The SLD is used for optical coherence tomography (OCT) whereby the light for the OCT sample arm and the fs-laser share the same optical path which contains a deformable mirror, scanner and focusing optics. Energy calibrated photodiodes are used to measure the threshold energy for a laser induced optical breakdown inside a water filled chamber that acts as simple eye model. OCT image based metrics were used to determine a set of Zernike polynomials that describe a near optimal deformable mirror state. Such a mirror state improved OCT resolution and at the same time lowered the required fs-laser energy for a laser induced optical breakdown inside the eye model substantially. © COPYRIGHT SPIE. eng
dc.language.iso eng
dc.publisher Bellingham : SPIE
dc.relation.ispartofseries Proceedings of SPIE 10886 (2019)
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
dc.subject Fs-laser eng
dc.subject Ophthalmic laser surgery eng
dc.subject Optical coherence tomography eng
dc.subject Wavefront sensorless adaptive optics eng
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title Wavefront sensorless adaptive optics for optical coherence tomography guided femtosecond laser surgery in the posterior eye eng
dc.type conferenceObject
dc.type article
dc.type Text
dc.relation.doi https://doi.org/10.1117/12.2509363
dc.bibliographicCitation.volume 10886
dc.bibliographicCitation.firstPage 1088603
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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