Castro José J, Pozo Antonio M, Rubiño Manuel, Anera Rosario G, Jiménez Del Barco Luis
Laboratory of Vision Sciences and Applications, Department of Optics, University of Granada, Mecenas Building (Sciences Faculty), Avenida de Fuentenueva, s/n. 18071 Granada, Spain.
J Ophthalmol. 2014;2014:704823. doi: 10.1155/2014/704823. Epub 2014 Apr 7.
Purpose. To evaluate the influence of alcohol consumption on the retinal-image quality and visual performance under surrounding low-illumination conditions. Methods. A volunteer sample of 67 subjects was analyzed. Optical quality of the eye was evaluated by means of the Strehl ratio, the Objective Scattering Index (OSI), and the tear-film quality. We used the visual disturbance index (VDI) to evaluate visual performance under low-illumination conditions and we measured the pupil size under these conditions. The tear-film volume was also measured. All measurements were made before and after alcohol consumption and patients were classified into two groups depending on their breath alcohol content (BrAC): low-alcohol (BrAC < 0.25 mg/L) and high-alcohol content (BrAC ≥ 0.25 mg/L). Results. The VDI was significantly higher after alcohol consumption: the higher the BrAC, the higher the deterioration of the visual discrimination capacity. The pupil size increased significantly for the high-BrAC group. Parameters evaluating optical quality deteriorated after alcohol consumption. Conclusion. The visual performance under low-illumination conditions and the retinal-image quality were deteriorated after alcohol consumption, especially for the high-alcohol group. Furthermore, some physiological changes were observed under effects for high-alcohol contents, such as an increase in the pupil size and disturbances in the tear film, which deteriorated optical quality.
目的。评估在周围低光照条件下饮酒对视网膜图像质量和视觉性能的影响。方法。对67名受试者的志愿者样本进行分析。通过斯特列尔比、客观散射指数（OSI）和泪膜质量评估眼睛的光学质量。我们使用视觉干扰指数（VDI）评估低光照条件下的视觉性能，并测量这些条件下的瞳孔大小。还测量了泪膜体积。所有测量均在饮酒前后进行，患者根据呼气酒精含量（BrAC）分为两组：低酒精组（BrAC < 0.25mg/L）和高酒精含量组（BrAC≥0.25mg/L）。结果。饮酒后VDI显著升高：BrAC越高，视觉辨别能力的恶化程度越高。高BrAC组的瞳孔大小显著增加。评估光学质量的参数在饮酒后恶化。结论。饮酒后，尤其是高酒精组，低光照条件下的视觉性能和视网膜图像质量会恶化。此外，在高酒精含量的影响下观察到一些生理变化，如瞳孔大小增加和泪膜紊乱，这会使光学质量恶化。
