Results 51 to 60 of about 390,607 (355)

Loss of Foveal Cone Structure Precedes Loss of Visual Acuity in Patients With Rod-Cone Degeneration. [PDF]

, 2019
PurposeTo assess the relationship between cone spacing and visual acuity in eyes with rod-cone degeneration (RCD) followed longitudinally.MethodsHigh-resolution images of the retina were obtained using adaptive optics scanning laser ophthalmoscopy from ...
Bensinger, Ethan, Duncan, Jacque L, Griffin, Shane, Loumou, Panagiota, Porco, Travis C, Qin, Jia, Ratnam, Kavitha, Rinella, Nicholas, Roorda, Austin, Saud, Asma   +9 more
core  

Exploratory Study on User's Dynamic Visual Acuity and Quality Perception of Impaired Images [PDF]

arXiv, 2020
In this paper we assess the impact of head movement on user's visual acuity and their quality perception of impaired images. There are physical limitations on the amount of visual information a person can perceive and physical limitations regarding the speed at which our body, and as a consequence our head, can explore a scene. In these limitations lie
arxiv  

Impact of enhanced leaf model on dose calculation accuracy in single‐isocenter multitarget stereotactic radiosurgery treatments

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Single‐isocenter multitarget (SIMT) radiosurgery has become increasingly popular as advancement in planning and delivery systems have made this approach clinically viable. With targets varying in size and distance from isocenter, SIMT plans are highly complex with dynamic multileaf collimator (MLC) motion.
Hem Moktan, Hongyu Jiang, H. Harold Li, Kenny Guida   +3 more
wiley   +1 more source

Brief Report: Which Came First? Exploring Crossmodal Temporal Order Judgements and Their Relationship with Sensory Reactivity in Autism and Neurotypicals [PDF]

, 2016
Previous studies have indicated that visual-auditory temporal acuity is reduced in children with autism spectrum conditions (ASC) in comparison to neurotypicals.
Daniel Poole, Ellen Poliakoff, Emma Gowen, Paul A. Warren   +3 more
core   +1 more source

VISUAL OUTCOMES OF IMPLANTATION OF MULTIFOCAL INTRAOCULAR LENS WITH ASYMMETRICAL LIGHT DISTRIBUTION

Alʹmanah Kliničeskoj Mediciny, 2016
Background: The results of implantation of refractive intraocular lenses (IOL), especially with an inferior segmental near add are of great interest due to advantages of the new lenses over more frequently used diffractive multifocal IOL.
E. N. Mityaeva, I. A. Loskutov
doaj   +1 more source

Application of PRVEP Waveform Amplitude Ratio to Evaluate Visual Acuity and Its Forensic Significance [PDF]

Fayixue Zazhi, 2019
Objective To research the correlation between the visual acuity ratio and pattern reversal visual evoked potential （PRVEP） P100 waveform amplitude ratio of both eyes.
YU Xiao-ying, TAN Si-lei, TANG Wei-yi, et al
doaj   +1 more source

Semi‐automated hippocampal avoidance whole‐brain radiotherapy planning

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Hippocampal avoidance whole‐brain radiotherapy (HA‐WBRT) is designed to spare cognitive function by reducing radiation dose to the hippocampus during the treatment of brain metastases. Current manual planning methods can be time‐consuming and may vary in quality, necessitating the development of automated approaches to streamline ...
Dong Joo Rhee, Subha Perni, Kelly J. Perrin, Kevin E. Casey, Alexandra O. Leone, Callistus M. Nguyen, Laurence E. Court, He Wang, Xin Wang, Eun Young Han   +9 more
wiley   +1 more source

Femtosecond Laser-Assisted In Situ Keratomileusis Treatment of Residual Refractive Error following Femtosecond Laser-Enabled Keratoplasty. [PDF]

, 2019
Purpose:To evaluate the safety and effectiveness of femtosecond laser-assisted in situ keratomileusis (LASIK) in the treatment of residual myopia and astigmatism following femtosecond laser-enabled keratoplasty (FLEK).
Farid, Marjan, Muniz Castro, Hannah, Shen, Elizabeth, Tsai, Lester, Wade, Matthew   +4 more
core   +1 more source

Visual Acuity Consistent Foveated Rendering towards Retinal Resolution [PDF]

IEEE Transactions on Visualization and Computer Graphics, 2025
Prior foveated rendering methods often suffer from a limitation where the shading load escalates with increasing display resolution, leading to decreased efficiency, particularly when dealing with retinal-level resolutions. To tackle this challenge, we begin with the essence of the human visual system (HVS) perception and present visual acuity ...
arxiv   +1 more source

Evaluation of dosimetric and spatial accuracy of a virtual cone technique for radiosurgery using linac‐integrated CBCT‐based polymer gel dosimetry

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study evaluates the dosimetric and geometric precision of a virtual cone technique using CBCT‐based polymer gel dosimetry, enabling radiation delivery, and imaging readout within an identical spatial coordinate system. Methods We created a C# script for a virtual cone technique that generates a treatment plan with 10 gantry arcs ...
Tenzin Kunkyab, Michael Lamey, Andrew Jirasek, Michael Kudla, Nathan Becker, Benjamin Mou, Derek Hyde   +6 more
wiley   +1 more source