The effect of Galilean magnification loupes on the visual acuity and working distance of dental students.
Galilean loupes
ergonomics
occupational health
visual acuity
Journal
Journal of dental education
ISSN: 1930-7837
Titre abrégé: J Dent Educ
Pays: United States
ID NLM: 8000150
Informations de publication
Date de publication:
16 Jan 2024
16 Jan 2024
Historique:
received:
13
11
2023
accepted:
28
11
2023
medline:
17
1
2024
pubmed:
17
1
2024
entrez:
17
1
2024
Statut:
aheadofprint
Résumé
This study aimed to evaluate the visual acuity and working distance of dental students using Galilean loupes at different magnification levels. The participants included 50 undergraduate dentistry students selected from each class in the second to fifth years (N = 200) of São Paulo State University, School of Dentistry, Araraquara. The response variables were (i) the working distance between the operator's eyes and the mouth of the dental phantom head, and (ii) visual acuity. The independent variables were the five levels of the Galilean magnification system (naked eye, Galilean loupe simulator without magnification, and Galilean loupes with 2.5×, 3.0×, or 3.5× magnification) and academic year. Visual acuity was measured using a miniature Snellen eye chart inserted into the Class I cavities of the maxillary molars. After verifying the assumptions of normality and sphericity, a mixed repeated measures analysis was performed (α = 0.05). Statistical significance was found between the "magnification system" and "academic year" for visual acuity (p < 0.001). For the second-, fourth-, and fifth-year participants, there were no significant differences in visual acuity between the naked eye and different magnifications of the Galilean loupes, which were superior to and significantly different from that of the loupe simulator. For the working distance, statistical significance was observed in the interaction between "magnification system" and "academic year" (p = 0.008). For the third-, fourth-, and fifth-year participants, there was no significant difference in the working distance between the naked eye and different magnifications of the Galilean loupes, which were superior to and significantly different from that of the simulator. It was concluded that the different magnification levels of the Galilean loupes did not influence the visual acuity or distance between the eyes of the operator and the mouth of the dental phantom head in the evaluated students.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Brazil (Finance code: 001)
Organisme : São Paulo Research Foundation (FAPESP)
ID : 2021/12031-4
Organisme : São Paulo Research Foundation (FAPESP)
ID : 2021/13069-5
Organisme : São Paulo Research Foundation (FAPESP)
ID : 2021/13408-4
Informations de copyright
© 2024 American Dental Education Association.
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