2.1. Subjects
myopic, color blindness or color weakness, myopia, rhinitis, color blindness or weakness
COLOR BLINDNESS, OLFACTORY DISORDER, MYOPIA, RHINITIS, COLD
This study was conducted among university students (undergraduate and graduate students) aged 18–26 years old; all subjects were recruited through the campus network and chose to participate in the experiment voluntarily and knowingly. After a preliminary interview, patients with rhinitis, cold and olfactory disorders were screened out. Subjects were required to have adequate sleep the day before the test, to not smoke or drink alcohol and to not use perfume or strong fragrance cosmetics on the day of the test. For some myopic subjects, after they were asked about their degree of myopia before the test, the focus of their virtual reality (VR) glasses was adjusted to ensure that the scene seen through their glasses was clear. In addition, subjects with color blindness or color weakness were excluded. The test for color blindness or weakness was conducted using the fifth edition of the Color Blindness Test Map [