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To analyze the myopia of middle school students in Heilongjiang Province in 2022, and to provide scientific basis for the development of myopia prevention strategies and measures.
99 114 middle school students in Heilongjiang Province in 2022 were selected to carry out a special survey on health risk behaviors. Their visual acuity and diopter were examined by using a 5-meter standard logarithmic visual acuity chart and desktop optometer. Binary Logistic regression was used to analyze the factors affecting myopia of students.
The total myopia rate of middle school students was 72.44%, including 70.50% junior high school students, 76.91% senior high school students and 64.47% vocational high school students. The myopia rate of students in urban area was higher than that in suburban county. The myopia rate of girls was higher than that of boys. Binary logistic regression analysis showed that: female students (OR=1.38, 95%CI: 1.35-1.43), frequently or always switching seats(OR=1.20, 95%CI: 1.15-1.25), spending more than 2 hours reading and writing after school every day(OR=1.11, 95%CI: 1.07-1.14), spending more than 2 hours a week attending cultural tutoring classes(OR=1.07, 95%CI: 1.03-1.11), parents often or always reminding them to pay attention to their reading and writing posture(OR=1.14, 95%CI: 1.10-1.19), and spending more time using the computer every day(h)≥ 2(OR =1.19, 95%CI: 1.24-1.45), using of mobile electronic devices in the past week(OR=1.11, 95%CI: 1.06-1.16), how often close range eye rest occurs(h)≥ 1(OR=1.11, 95%CI: 1.08-1.15), average daily indoor sitting time(h)≥ 8(OR=1.15, 95%CI: 1.12-1.19) are risk factors for myopia; Suburban counties(OR=0.95, 95%CI: 0.92-0.98), frequently adjusting the height of desks and chairs according to one’s own height(OR=0.94, 95%CI: 0.91-0.97), engaging in outdoor activities during breaks(OR=0.91, 95%CI: 0.89-0.94), having eyes more than 33 cm away from books while reading and writing(OR=0.84, 95%CI: 0.81-0.88), watching TV for≥2(OR=0.84, 95%CI: 0.80-0.88), and having outdoor activity time during the day(h)≥ 2(OR=0.93, 95%CI: 0.90-0.97), average daily sleep time(h)≥ 8(OR =0.80, 95%CI: 0.78-0.83) are protective factors for myopia.
Myopia is related to various factors such as residential area, gender, lifestyle, and behavioral habits.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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