Comparison of contrast sensitivity among welder with three methods of GMAW, SMAW and resistance welding
Introduction: The present study was carried out to compare contrast sensitivity among three groups of professional welders including (1) those who use gas metal Arc welding (GMAW) (2) those who use shield metal Arc welding (SMAW) and the group that uses resistance welding. . Material and Method: In...
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| Format: | Article |
| Language: | fas |
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Tehran University of Medical Sciences
2014-07-01
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| Series: | بهداشت و ایمنی کار |
| Subjects: | |
| Online Access: | http://jhsw.tums.ac.ir/browse.php?a_code=A-10-25-93&slc_lang=en&sid=1 |
| _version_ | 1818583402188636160 |
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| author | B. Maleckpour E. Jafarzadehpour A. Mirzajani |
| author_facet | B. Maleckpour E. Jafarzadehpour A. Mirzajani |
| author_sort | B. Maleckpour |
| collection | DOAJ |
| description | Introduction: The present study was carried out to compare contrast sensitivity among three groups of professional welders including (1) those who use gas metal Arc welding (GMAW) (2) those who use shield metal Arc welding (SMAW) and the group that uses resistance welding.
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Material and Method: In this research, all the welders who use GMAW, SMAW and resistance welding working in an industry who were all male, performed contrast sensitivity test, using Freiburg. The contrast sensitivity test was done at three spatial frequency of 1cpd, 5cpd and 15 cpd under a constant condition. The three selected groups were similar regarding age and work experience. The result of the three groups at each spatial frequency were recorded and compared with other groups.
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Results: ANOVA test showed that decrease contrast sensitivity in spatial frequency of GMAW group at the spatial frequency 15cpd, significantly decrease comparing to SMAW group (p=0.028) and resistance welding group (p=0.041). The mean (SD) of contrast sensitivity at frequency of 1cpd, 5cpd and 15cpd was respectively 140.69±51.8, 172.7±43.75 and 39.8±25.92 for the GMAW group and 157.8±42.2, 183.21±32.01 and 60.57±54.30 for the SMAW group and 149.10±50.68, 180.60±35.42 and 57.38±39.22 for resistance welding.
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Conclusion: Although all welders use goggle or other personal protective equipment, loss of contrast sensitivity of GMAW workers can be attributed to the cumulative effects of the radiation. |
| first_indexed | 2024-12-16T08:04:42Z |
| format | Article |
| id | doaj.art-a06c010047324e02af467d44cdb1709d |
| institution | Directory Open Access Journal |
| issn | 2251-807X 2383-2088 |
| language | fas |
| last_indexed | 2024-12-16T08:04:42Z |
| publishDate | 2014-07-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | بهداشت و ایمنی کار |
| spelling | doaj.art-a06c010047324e02af467d44cdb1709d2022-12-21T22:38:29ZfasTehran University of Medical Sciencesبهداشت و ایمنی کار2251-807X2383-20882014-07-01422736Comparison of contrast sensitivity among welder with three methods of GMAW, SMAW and resistance weldingB. Maleckpour0E. Jafarzadehpour1A. Mirzajani2 MSc of optometry, optometry department of Rehabilitation Faculty, Iran University of Medical Sciences Associate professor of optometry department of Rehabilitation Faculty, Iran University of Medical Sciences Associate professor of optometry department of Rehabilitation Faculty, Iran University of Medical Sciences Introduction: The present study was carried out to compare contrast sensitivity among three groups of professional welders including (1) those who use gas metal Arc welding (GMAW) (2) those who use shield metal Arc welding (SMAW) and the group that uses resistance welding. . Material and Method: In this research, all the welders who use GMAW, SMAW and resistance welding working in an industry who were all male, performed contrast sensitivity test, using Freiburg. The contrast sensitivity test was done at three spatial frequency of 1cpd, 5cpd and 15 cpd under a constant condition. The three selected groups were similar regarding age and work experience. The result of the three groups at each spatial frequency were recorded and compared with other groups. . Results: ANOVA test showed that decrease contrast sensitivity in spatial frequency of GMAW group at the spatial frequency 15cpd, significantly decrease comparing to SMAW group (p=0.028) and resistance welding group (p=0.041). The mean (SD) of contrast sensitivity at frequency of 1cpd, 5cpd and 15cpd was respectively 140.69±51.8, 172.7±43.75 and 39.8±25.92 for the GMAW group and 157.8±42.2, 183.21±32.01 and 60.57±54.30 for the SMAW group and 149.10±50.68, 180.60±35.42 and 57.38±39.22 for resistance welding. . Conclusion: Although all welders use goggle or other personal protective equipment, loss of contrast sensitivity of GMAW workers can be attributed to the cumulative effects of the radiation.http://jhsw.tums.ac.ir/browse.php?a_code=A-10-25-93&slc_lang=en&sid=1Ultraviolet radiation Contrast sensitivity test Arc welding Resistance welding Spatial frequency Eye safety |
| spellingShingle | B. Maleckpour E. Jafarzadehpour A. Mirzajani Comparison of contrast sensitivity among welder with three methods of GMAW, SMAW and resistance welding بهداشت و ایمنی کار Ultraviolet radiation Contrast sensitivity test Arc welding Resistance welding Spatial frequency Eye safety |
| title | Comparison of contrast sensitivity among welder with three methods of GMAW, SMAW and resistance welding |
| title_full | Comparison of contrast sensitivity among welder with three methods of GMAW, SMAW and resistance welding |
| title_fullStr | Comparison of contrast sensitivity among welder with three methods of GMAW, SMAW and resistance welding |
| title_full_unstemmed | Comparison of contrast sensitivity among welder with three methods of GMAW, SMAW and resistance welding |
| title_short | Comparison of contrast sensitivity among welder with three methods of GMAW, SMAW and resistance welding |
| title_sort | comparison of contrast sensitivity among welder with three methods of gmaw smaw and resistance welding |
| topic | Ultraviolet radiation Contrast sensitivity test Arc welding Resistance welding Spatial frequency Eye safety |
| url | http://jhsw.tums.ac.ir/browse.php?a_code=A-10-25-93&slc_lang=en&sid=1 |
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