Investigation on Dietary Lutein Intake and Visual Fatigue in College Students

Abstract

Objectives: To investigate the correlation between intake of lutein and the occurrence of visual fatigue symptoms in college students. Methods: A total of 428 college students were randomly selected to answer the questionnaires in order to study the influencing factors of visual fatigue symptoms and dietary intake of lutein. Statistical methods such as Wilcoxon test and logistic regression analysis were used for data analysis Results: The median intake of lutein in stu-dents was 2.02 mg/d. Dietary lutein was mainly provided by vegetables (93.17%). The incidence rate of visual fatigue was significantly higher in female than in male (P < 0.05). The incidence rate of visual fatigue was 76.2%, while the incidence of bulging eyes and vision loss were respectively 46.3% and 39.7% The risk factors of visual fatigue include exposure to screen light (OR = 1.635), myopia (OR = 1.902), and unhealthy habits (OR = 3.369). The protective factors of visual fatigue include male gender (OR = 0.588), outdoor activity (OR = 0.062) and lutein intake (OR = 0.507). Con-clusion: The intake of dietary lutein among the students is low, while the incidence rate of visual fatigue is high. The intake of dietary lutein is significantly correlated with the degree of visual fatigue.