Background
Numerous studies have confirmed that ambient temperature and air pollution are associated with higher risk of morbidities to different systems of the human body, yet few have addressed their effect on the ocular system. The purpose of this study is to determine the association between temperature, air pollution and emergency room visits for non-specific conjunctivitis
Methods
In this retrospective cohort study, the records of all emergency room visits to Soroka University Medical Center (SUMC) from 2009 to 2014 were reviewed for patients with conjunctivitis. Exposure to fine and coarse particulate matter and temperature were assessed by a hybrid model that incorporated daily satellite remote sensing.
Results
The records of the 6001 patients who visited the SUMC emergency room with conjunctivitis, together with the meteorological data, revealed a positive association between temperature increment and incidence of conjunctivitis. The strongest effect was found during summer and autumn: the incidence increased 8.1% for each 1oC rise in temperature between 24oC and 28oC in the summer, and 7.2% for each 1oC rise in temperature between 13oC and 23oC in autumn. The association between fine and coarse particulate matter and incidence of conjunctivitis was not statistically significant.
Conclusion
High ambient temperature is significantly associated with an increased risk of nonspecific conjunctivitis in summer and autumn and not in spring and winter. Conjunctivitis is not associated with air pollution. The findings can assist community clinics and hospital emergency rooms prepare for the upticks in the condition during certain seasons and acute rises in temperatures, lowering the financial costs to both the individual and the public.

Figure 1

Figure 2
This is a list of supplementary files associated with this preprint. Click to download.
Loading...
On 13 Jan, 2021
Received 12 Jan, 2021
Invitations sent on 11 Jan, 2021
On 11 Jan, 2021
On 27 Dec, 2020
On 27 Dec, 2020
On 27 Dec, 2020
On 30 Nov, 2020
Received 24 Nov, 2020
Invitations sent on 01 Nov, 2020
On 01 Nov, 2020
On 31 Oct, 2020
On 31 Oct, 2020
On 31 Oct, 2020
On 20 Jul, 2020
Received 26 Mar, 2020
On 19 Mar, 2020
Invitations sent on 12 Mar, 2020
On 12 Mar, 2020
On 11 Mar, 2020
On 10 Mar, 2020
On 10 Mar, 2020
Posted 15 Aug, 2019
On 18 Dec, 2019
Received 12 Dec, 2019
Received 29 Nov, 2019
On 14 Nov, 2019
On 13 Nov, 2019
Invitations sent on 30 Aug, 2019
On 08 Aug, 2019
On 02 Jul, 2019
On 01 Jul, 2019
On 13 Jan, 2021
Received 12 Jan, 2021
Invitations sent on 11 Jan, 2021
On 11 Jan, 2021
On 27 Dec, 2020
On 27 Dec, 2020
On 27 Dec, 2020
On 30 Nov, 2020
Received 24 Nov, 2020
Invitations sent on 01 Nov, 2020
On 01 Nov, 2020
On 31 Oct, 2020
On 31 Oct, 2020
On 31 Oct, 2020
On 20 Jul, 2020
Received 26 Mar, 2020
On 19 Mar, 2020
Invitations sent on 12 Mar, 2020
On 12 Mar, 2020
On 11 Mar, 2020
On 10 Mar, 2020
On 10 Mar, 2020
Posted 15 Aug, 2019
On 18 Dec, 2019
Received 12 Dec, 2019
Received 29 Nov, 2019
On 14 Nov, 2019
On 13 Nov, 2019
Invitations sent on 30 Aug, 2019
On 08 Aug, 2019
On 02 Jul, 2019
On 01 Jul, 2019
Background
Numerous studies have confirmed that ambient temperature and air pollution are associated with higher risk of morbidities to different systems of the human body, yet few have addressed their effect on the ocular system. The purpose of this study is to determine the association between temperature, air pollution and emergency room visits for non-specific conjunctivitis
Methods
In this retrospective cohort study, the records of all emergency room visits to Soroka University Medical Center (SUMC) from 2009 to 2014 were reviewed for patients with conjunctivitis. Exposure to fine and coarse particulate matter and temperature were assessed by a hybrid model that incorporated daily satellite remote sensing.
Results
The records of the 6001 patients who visited the SUMC emergency room with conjunctivitis, together with the meteorological data, revealed a positive association between temperature increment and incidence of conjunctivitis. The strongest effect was found during summer and autumn: the incidence increased 8.1% for each 1oC rise in temperature between 24oC and 28oC in the summer, and 7.2% for each 1oC rise in temperature between 13oC and 23oC in autumn. The association between fine and coarse particulate matter and incidence of conjunctivitis was not statistically significant.
Conclusion
High ambient temperature is significantly associated with an increased risk of nonspecific conjunctivitis in summer and autumn and not in spring and winter. Conjunctivitis is not associated with air pollution. The findings can assist community clinics and hospital emergency rooms prepare for the upticks in the condition during certain seasons and acute rises in temperatures, lowering the financial costs to both the individual and the public.

Figure 1

Figure 2
This is a list of supplementary files associated with this preprint. Click to download.
Loading...