Suchergebnisse

This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019. ; Support Spanish Government Grant FIS2014-56643-R; FIS2017-84753-R; ISCIII DTS16/00127; PTQ-15-07432; CAM IND2017/BMD7670; European Project Presbyopia ERC-2011-AdG 294099 ; Peer reviewed

15 pags., 10 figs. 3 tabs. ; We present a new metric (Multifocal Acceptance Score, MAS-2EV) to evaluate vision with presbyopic corrections. The MAS-2EV is based on a set of images representing natural visual scenes at day and night conditions projected in far and near displays, and a near stereo target. Subjects view and score the images through diferent binocular corrections (monofocal corrections at far; bifocal corrections; monovision and modifed monovision) administered with soft contact lenses (in cyclopleged young subjects) or with a binocular simultaneous vision simulator (in presbyopic and cyclopleged young subjects). MAS-2EV scores are visually represented in the form of polygons, and quantifed using diferent metrics: overall visual quality, visual degradation at far, visual beneft at near, near stereo beneft, visual imbalance near-far, overall visual imbalance and a combined overall performance metric. We have found that the MAS-2EV has sufcient repeatability and sensitivity to allow diferentiation across corrections with only two repetitions, and the duration of the psychophysical task (3 min for subject/condition/correction) makes it useable in the clinic. We found that in most subjects binocular bifocal corrections produce the lowest visual imbalance, and the highest near stereo beneft. 46.67% of the subjects ranked binocular bifocal corrections frst, and 46.67% of the subjects ranked monovision frst. MAS-2EV, particularly in combination with visual simulators, can be applied to select prospective presbyopic corrections in patients prior to contact lens ftting or intraocular lens implantation. ; European Research Council (ERC-2011-AdC 294099 to SM); Spanish Government (FIS2017-84753R to SM, ISCIII DTS16/00127 to CD, DI-15-07753 to JLM, PTQ-15-07432 to EG, PTA2017-13787-I to MR), and Madrid Regional Government (IND2017/BMD-7670 to XB). ; Peer reviewed

Vancouver Convention Centre, Vancouver, B.C., April 28 – May 2 (2019) . -- ARVO Annual Meeting Abstract 2019 ; Support Spanish Government RyC-2016-21125, PTQ-15-07432, FPU17/02760, FIS2014-56643-R, FIS2017-84753-R and ISCIII-DTS16-00127, S Madariaga MECD PRX16/00154 + Fulbright CIES FMECD-ST-2016; EU H2020 SME IA GA-739882; EIT Health; ERC-2011-AdC 294099; CAM IND2017/BMD-7670; CAM and Marie Curie Action EU FP7/2007-2013 COFUND 291820 ; Peer reviewed

16 pags., 9 figs., 1 tab. -- Open Access funded by Creative Commons Atribution Licence 4.0 ; Tunable lenses are becoming ubiquitous, in applications including microscopy, optical coherence tomography, computer vision, quality control, and presbyopic corrections. Many applications require an accurate control of the optical power of the lens in response to a time-dependent input waveform. We present a fast focimeter (3.8 KHz) to characterize the dynamic response of tunable lenses, which was demonstrated on different lens models. We found that the temporal response is repetitive and linear, which allowed the development of a robust compensation strategy based on the optimization of the input wave, using a linear time-invariant model. To our knowledge, this work presents the first procedure for a direct characterization of the transient response of tunable lenses and for compensation of their temporal distortions, and broadens the potential of tunable lenses also in high-speed applications. ; VA and EL acknowledge financial support from Comunidad de Madrid and Marie Curie Action of the European Union FP7/2007-2013 COFUND 291820; XB from Comunidad de Madrid Doctorado Industrial IND2017/BMD-7670; EL from Spanish Government Ramon y Cajal Program RyC-2016-21125; EG from Spanish Government Torres-Quevedo Program PTQ-15-07432; LS from EU H2020 SME Innovation Associate GA-739882; EG from EIT Health; SM from ERC Grant Agreement ERC-2011-AdC 294099 and Spanish Government Grants FIS2014-56643-R; SM and CD from Spanish Government Grant FIS2017-84753-R; and CD from DTS16-00127.

Tunable lenses are becoming ubiquitous, in applications including microscopy, optical coherence tomography, computer vision, quality control, and presbyopic corrections. Many applications require an accurate control of the optical power of the lens in response to a time-dependent input waveform. We present a fast focimeter (3.8 KHz) to characterize the dynamic response of tunable lenses, which was demonstrated on different lens models. We found that the temporal response is repetitive and linear, which allowed the development of a robust compensation strategy based on the optimization of the input wave, using a linear time-invariant model. To our knowledge, this work presents the first procedure for a direct characterization of the transient response of tunable lenses and for compensation of their temporal distortions, and broadens the potential of tunable lenses also in high-speed applications ; VA and EL acknowledge financial support from Comunidad de Madrid and Marie Curie Action of the European Union FP7/2007-2013 COFUND 291820; XB from Comunidad de Madrid Doctorado Industrial IND2017/BMD-7670; EL from Spanish Government Ramon y Cajal Program RyC-2016-21125; EG from Spanish Government Torres-Quevedo Program PTQ-15-07432; LS from EU H2020 SME Innovation Associate GA-739882; EG from EIT Health; SM from ERC Grant Agreement ERC-2011-AdC 294099 and Spanish Government Grants FIS2014-56643-R; SM and CD from Spanish Government Grant FIS2017-84753-R; and CD from DTS16-00127