Table 2.
Distribution of knowledge scores regarding refractive error among left-behind children of migrant workers.
| Items | N (%) | |
|---|---|---|
| Wrong | Correct | |
| K1 Refractive errors include myopia, hyperopia and astigmatism. | 136 (38.86) | 214 (61.14) |
| K2 The main manifestation of myopia is a lack of clarity in seeing at a distance. | 92 (26.29) | 258 (73.71) |
| K3 You can inherit myopia from your parents. | 117 (33.43) | 233 (66.57) |
| K4 Myopia of −4.00 or more is considered a severe myopia. | 119 (34) | 231 (66) |
| K5 Mild astigmatism may be slightly uncomfortable, but with severe astigmatism you may feel that you are seeing vague or doubled images, not clear from far and near. | 100 (28.57) | 250 (71.43) |
| K6 Inappropriate eye usage, such as regular eye rubbing, may aggravate astigmatism. | 108 (30.86) | 242 (69.14) |
| K7 To fully rest your eyes, you need to get up every 20 min while working and studying and stand in front of a window and look 20 feet (6 m) away for at least 20 s. | 58 (16.57) | 292 (83.43) |
| K8 When you are taking an online course at home, try to ensure that the room is well lit and that the brightness of your electronic equipment is adjusted appropriately, not too bright or too dark. | 36 (10.29) | 314 (89.71) |
| K9 Outdoor exercises are also crucial to myopia prevention and control, and with proper protective measures you should spend more than 2 h in outdoor activities every day. | 39 (11.14) | 311 (88.86) |
| K10 You should not read at home in too bright or too dark light, and if possible, ensure that the room lighting and the eye lamp are switched on at the same time. | 45 (12.86) | 305 (87.14) |
| K11 Wearing frame glasses is one of the proper ways to control myopia, while reducing the frequency of reading/studying at close range and increasing outdoor activities are also important. | 86 (24.57) | 264 (75.43) |
| K12 When your eyes become tired and dry, blink often to relieve the feeling. | 85 (24.29) | 265 (75.71) |
| K13 Diet and sleep also have an effect on the onset and progression of myopia. | 92 (26.29) | 258 (73.71) |