Castro-Torres José J, Casares-López Miriam, Ortiz-Peregrina Sonia, Martino Francesco, Gómez-Robledo Luis, Jiménez José R
Laboratory of Vision Sciences and Applications, Department of Optics, University of Granada, 18071, Granada, Spain.
Basic and Applied Colorimetry Lab, Department of Optics, University of Granada, 18071, Granada, Spain.
Sci Rep. 2024 May 3;14(1):10183. doi: 10.1038/s41598-024-61069-4.
The perception of halos and other night vision disturbances is a common complaint in clinical practice. Such visual disturbances must be assessed in order to fully characterize each patient's visual performance, which is particularly relevant when carrying out a range of daily tasks. Visual problems are usually assessed using achromatic stimuli, yet the stimuli encountered in daily life have very different chromaticities. Hence, it is important to assess the effect of the chromaticity of visual stimuli on night vision disturbances. The aim of this work is to study the influence of the chromaticity of different visual stimuli on night vision disturbances by analyzing straylight and visual discrimination under low-light conditions. For that, we assessed the monocular and binocular visual discrimination of 27 subjects under low illumination using the Halo test. The subjects' visual discrimination was assessed after exposure to different visual stimuli: achromatic, red, green, and blue, both at the monitor's maximum luminance and maintaining the same luminance value for the different visual stimuli. Monocular straylight was also measured for an achromatic, red, green, and blue stimuli. The blue stimulus had the greatest effect on halos in both monocular and binocular conditions. Visual discrimination was similar for the red, green, and achromatic stimuli, but worsened at lower luminance. The greatest influence of straylight was observed for the blue stimulus. In addition, visual discrimination correlated with straylight measurements for achromatic stimuli, wherein greater straylight values correlated with an increased perception of halos and other visual disturbances.
在临床实践中，光晕及其他夜视障碍的感知是一种常见主诉。必须对这类视觉障碍进行评估，以便全面描述每位患者的视觉表现，这在执行一系列日常任务时尤为重要。视觉问题通常使用消色差刺激进行评估，但日常生活中遇到的刺激具有非常不同的色度。因此，评估视觉刺激的色度对夜视障碍的影响很重要。这项工作的目的是通过分析低光条件下的杂散光和视觉辨别力，研究不同视觉刺激的色度对夜视障碍的影响。为此，我们使用光晕测试评估了27名受试者在低光照条件下的单眼和双眼视觉辨别力。在受试者暴露于不同视觉刺激（消色差、红色、绿色和蓝色）后，评估其视觉辨别力，这些刺激分别处于显示器的最大亮度以及不同视觉刺激保持相同亮度值的情况下。还测量了消色差、红色、绿色和蓝色刺激的单眼杂散光。蓝色刺激在单眼和双眼条件下对光晕的影响最大。红色、绿色和消色差刺激的视觉辨别力相似，但在较低亮度下会变差。观察到蓝色刺激的杂散光影响最大。此外，消色差刺激的视觉辨别力与杂散光测量值相关，其中较大的杂散光值与光晕及其他视觉障碍的感知增加相关。
