The Effect of Air Pollution on the Occurrence of Nonspecific Conjunctivitis.
Purpose. To investigate the short-term effect of air pollution on occurrence of nonspecific conjunctivitis. Methods. Data were collected from outpatient visits from cases with conjunctivitis over a period of one year. Regression analysis was performed to evaluate the relationship between the number of outpatient visits and the air quality and the lag effect of air quality on conjunctivitis occurrence. Results. The air quality index on the day of presentation (P = 0.023), one day before presentation (P = 0.049), and two days before presentation day (P = 0.050) had a positive relation with outpatient visits for conjunctivitis. The air quality index (P = 0.001) and outpatient visits number per day (P = 0.013) in autumn and winter (October to March) were significantly higher than those in spring (April) and summer (September). Conclusions. The air quality index within two days before presentation affected the probability of attending the outpatient clinic for nonspecific conjunctivitis. High number of cases can be expected in colder season.
Department of Ophthalmology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China.
Zhiwei
Z
Li
Baotou Chaoju Eye Hospital, Baotou 014000, China.
Xiaoyan
X
Bian
State Grid Shandong Electric Power Research Institute, Jinan 250021, China.
Jianguang
0000-0002-3695-3431
J
Yin
Baotou Chaoju Eye Hospital, Baotou 014000, China.
Xiaoli
X
Zhang
Department of Ophthalmology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China.
Guoying
G
Mu