Results 21 to 30 of about 8,367,182 (364)
Spatio-chromatic contrast sensitivity under mesopic and photopic light levels
Journal of Vision, 2020 Contrast sensitivity functions (CSFs) characterize the sensitivity of the human visual system at different spatial scales, but little is known as to how contrast sensitivity for achromatic and chromatic stimuli changes from a mesopic to a highly photopic
S. Wuerger +5 more
semanticscholar +1 more source
Photonics, 2022 Peripheral retinal contrast reduction is suggested as a potential myopia control strategy. However, the underlying mechanism is yet unknown. Therefore, this study investigated the influence of peripheral contrast reduction on central chromatic and ...
Antonia Neumann +6 more
doaj +1 more source
Digital contrast sensitivity chart with varying visual acuity: Development and validation
Oman Journal of Ophthalmology, 2023 BACKGROUND: Contrast sensitivity (CS) evaluation is very much necessary for the diagnosis and management of eye conditions. Several disadvantages seen in the traditionally used Pelli-Robson (PR) chart persuaded us to develop a novel digital device for ...
Prateeksha G Hegde +3 more
doaj +1 more source
Complex Observation in Electron Microscopy VIII: Novel Hilbert Phase-plates to Maximize Phase-contrast Sensitivity [PDF]
, 2022 Phase-plate transmission electron microscopy has recently regressed since a report that Volta phase-plate phase-contrast is less sensitive than non-phase-plate phase contrast, which leads to conventional defocusing phase-contrast. What about Hilbert phase-plate phase-contrast? We report that the Hilbert phase-plate method can survive if two experiments
arxiv +1 more source
Türk Oftalmoloji Dergisi, 2013 Purpose: To evaluate the effects of different lens designs on visual quality among soft spherical contact lens users. Material and Method: Forty eyes of twenty patients from our contact lens unit were included in this study.
Mustafa Demir +2 more
doaj +1 more source
Tomographic Reconstruction using Tilted Laue Analyser Based X-ray Phase-Contrast Imaging [PDF]
Journal of Synchrotron Radiation, 28, 283-291 (2021), 2020 Analyser-Based Phase-Contrast imaging (ABPCI) is a phase-contrast imaging method that produces high contrast images of weakly absorbing materials. However, it is only sensitive to phase variations lying in the diffraction plane of the analyser crystal (i.e in one dimension; 1-D), as it is highly sensitive to phase variations lying in the diffraction ...
arxiv +1 more source
The new numbers contrast sensitivity chart for contrast sensitivity measurement
Journal of Optometry, 2011 Purpose: To develop and assess the agreement between the 3 newly made numbers contrast sensitivity charts and the MARS contrast sensitivity chart (MARS) in contrast sensitivity measurement.
Bharkbhum Khambhiphant +2 more
doaj +1 more source
Ocular hypertension in myopia: analysis of contrast sensitivity [PDF]
, 2018 Purpose: we evaluated the evolution of contrast sensitivity reduction in patients affected by ocular hypertension and glaucoma, with low to moderate myopia.
Arrico, L +4 more
core +1 more source
Folia Medica Indonesiana, 2021 This study was to compare the effectiveness of hyperbaric oxygen therapy (HBOT) on contrast and macular light sensitivity improvement in dry type age-related macular degeneration (AMD) patients.
Indriani Kartika Dewi +2 more
doaj +1 more source
Chromatic Contrast Sensitivity [PDF]
, 2014 International ...
Gegenfurtner, Karl, Witzel, Christoph
core +1 more source