The authors thank the UK Engineering and Physical Sciences Research Council (grant EP/J01771/X) and the European Union project FAMOS (FP7 ICT, contract no. 317744) for funding. P.P. acknowledges funding by the Estonian Research Council (grants PUTJD8 and PUT369). ; We demonstrate the first light sheet microscope using propagation invariant, accelerating Airy beams that operates both in single- and two-photon modes. The use of the Airy beam permits us to develop an ultra compact, high resolution light sheet system without beam scanning. In two-photon mode, an increase in the field of view over the use of a standard Gaussian beam by a factor of six is demonstrated. This implementation for light sheet microscopy opens up new possibilities across a wide range of biomedical applications, especially for the study of neuronal processes. ; Publisher PDF ; Peer reviewed
Objectives: To examine the feasibility of automatically segmented choroidal vessels in three-dimensional (3D) 1060-nmOCT by testing repeatability in healthy and AMD eyes and by mapping Haller's and Sattler's layer thickness in healthy eyes Methods: Fifty-five eyes (from 45 healthy subjects and 10 with non-neovascular age-related macular degeneration (AMD) subjects) were imaged by 3D-1060-nmOCT over a 36°x36° field of view. Haller's and Sattler's layer were automatically segmented, mapped and averaged across the Early Treatment Diabetic Retinopathy Study grid. For ten AMD eyes and ten healthy eyes, imaging was repeated within the same session and on another day. Outcomes were the repeatability agreement of Haller's and Sattler's layer thicknesses in healthy and AMD eyes, the validation with ICGA and the statistical analysis of the effect of age and axial eye length (AL) on both healthy choroidalsublayers. Results: The coefficients of repeatability for Sattler's and Haller's layers were 35% and 21% in healthy eyes and 44% and 31% in AMD eyes, respectively. The mean±SD healthy central submacular field thickness for Sattler's and Haller's was 87±56 µm and 141±50 µm, respectively, with a significant relationship for AL (P<.001). Conclusions: Automated Sattler's and Haller's thickness segmentation generates rapid 3D measurements with a repeatability correspondingto reported manual segmentation. Sublayers in healthy eyes thinnedsignificantly with increasing AL. In the presence of the thinned Sattler's layer in AMD, careful measurement interpretation is needed. Automatic choroidal vascular layer mapping may help to explain if pathological choroidal thinning affects medium and large choroidal vasculature in addition to choriocapillaris loss. ; Macular Vision Research Foundation ; Medical University of Vienna ; European Union (project FUN OCT (FP7 HEALTH, contract no. 201880)) ; European Union (FAMOS (FP7 ICT 317744)) ; European Union (FWF-NFN 'Photoacoustic imaging in biology and Medicine', Oesterreichische Nationalbank Jubilaumsfonds projekt (14294)) ; National Institutes of Health (U.S.) (NIH R01-EY011289-27) ; Deutsche Forschungsgemeinschaft (DFG-GSC80-SAOT) ; Deutsche Forschungsgemeinschaft (DFG-GSC80-SAOT, DFG-HO-1791/11-1) ; Carl Zeiss Meditec, Inc. ; FEMTOLASERS (Firm) ; Christian Doppler Society
