en Health Safety and Environment (HSE) Original articles <div style="text-align: justify;"><strong><em>Introduction:</em></strong> According to the literature, Central Retinal Arteriolar Equivalent (CRAE), Central Retinal Venular Equivalent (CRVE), and Artemio Venule Ratio (AVR) are three important markers in determining the changes of retinal artery. These markers are employed as an indicator of cardiovascular effects in workers. This study aimed to evaluate the changes in retinal micro vascular responses in workers exposed to short-term exposure to particulate matters caused by occupational processes using CRAE, CRVE, and AVR markers.<span dir="RTL"></span><br> <strong><em>Materials and Methods:</em></strong> In this study, 96 workers exposed to job-related pollution in a tile and ceramic company were investigated. Fundus photos of these people were analyzed via ARIA software using the related protocols. The data were investigated employing Kolmogorov&ndash;Smirnov and Mann-Whitney tests as well as the correlation and regression tests.<br> <strong><em>Results:</em></strong> No significant difference was observed in the ocular parameters of smokers and non-smokers. Cardiovascular parameters had no significant correlation with CRAE and CRVE as well as breathable and inhalable dust; however, these parameters had a direct and significant correlation with AVR, PM₁₀, and PM_2.5particles.<br> <strong><em>Conclusion:</em> </strong>The results did not show any changes in the retinal artery in workers who were exposed to job-related pollution. Moreover, no significant relationship was found between retinal artery changes and cardiovascular parameters. However, more large-scale studies are needed to clarify the relationship of particulate air pollutants with CRAE, CRVE, and AVR changes.</div> Retinal Artery, Particulate Air Pollutants, Cardiovascular Diseases, Work Environment. 1211 1218 http://jehsd.ssu.ac.ir/browse.php?a_code=A-10-242-1&slc_lang=en&sid=1 Fatemeh Aminaei f1370donya@yahoo.com 0000-0001-9983-2701 No Departments of Occupational Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Mohammad Javad Zare Sakhvidi mjzare@ssu.ac.ir 0000-0003-1276-6487 No Departments of Occupational Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Hamideh Mihanpour h.mihanpour@gmail.com 0000-0002-3886-6323 No Departments of Occupational Health Engineering, Faculty of Paramedicine Abarkouh, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Mojtaba Moghaddassi mojtabahse@yahoo.com 0000-0001-7818-2789 No Departments of HSE (Health, Safety, and Environment) in Iran Central Iron Ore Company. Mahdiyeh Shafiezadeh Bafghi m.shafiezade@yahoo.com 0000-0002-8041-9041 Yes Departments of Occupational Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.