Do automotive window films affect drivers’ safety by decreasing vision sensitivity? A Cross-sectional study

ABSTRACT Objective: To measure visual acuity in high contrast and low contrast sensitivities in different grades of visible light transmission films in three different positions (front, lateral and rear windows). Methods: Forty-four healthy volunteers between 30-75 y-o, with BCVA better than 0,5, were tested in the 5 following vehicles with different grades of visible light transmission films. Vehicle 1: 75% in the front and 70% in the lateral and rear windows; Vehicle 2: 70% in the front and lateral windows and 28% in the rear; Vehicle 3: 70% in the front, 28% in the lateral and 15% rear; Vehicle 4: 35% in all 3 windows; Vehicle 5: 50% in the front, 20% in the lateral and 15% in the rear. Descriptive statistics were used and the average of the 3 measurements of VA was considered. Wilcoxon Test was applied to compare the average visual acuity in each vehicle and position. P value<0.05 was considered statistically significant. Results: According to the Brazilian Traffic Regulations for driving in categories C/D/E, when low contrast was tested in the front window, all visible light transmissions were borderline, in the lateral window they were all outside the limit, while in the rear window for both low and high contrast, all visible light transmissions tested were outside the limit and also borderline for driving in categories A/B, with the exception of the vehicle with visible light transmission of 35%. Conclusion: Visual acuity is affected, especially in the rear window, by the use of automotive films. The study is an alert that window films is a possible cause of accidents and may contribute to the revision of traffic regulations worldwide.

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Main Authors: Ramos,Carolina do Val Ferreira, Pap,Luciana Piacente, Chivante,Deborah Reuter Amaral, Prodocimo,Larissa Maria, Walsh,Aileen, Crema,Camilla Walsh, Crema,Armando Stefano, Schor,Paulo
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Oftalmologia 2022
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-72802022000100215
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spelling oai:scielo:S0034-728020220001002152022-05-05Do automotive window films affect drivers’ safety by decreasing vision sensitivity? A Cross-sectional studyRamos,Carolina do Val FerreiraPap,Luciana PiacenteChivante,Deborah Reuter AmaralProdocimo,Larissa MariaWalsh,AileenCrema,Camilla WalshCrema,Armando StefanoSchor,Paulo Accidents, traffic Visual acuity Contrast sensitivity Automobiles Legislation ABSTRACT Objective: To measure visual acuity in high contrast and low contrast sensitivities in different grades of visible light transmission films in three different positions (front, lateral and rear windows). Methods: Forty-four healthy volunteers between 30-75 y-o, with BCVA better than 0,5, were tested in the 5 following vehicles with different grades of visible light transmission films. Vehicle 1: 75% in the front and 70% in the lateral and rear windows; Vehicle 2: 70% in the front and lateral windows and 28% in the rear; Vehicle 3: 70% in the front, 28% in the lateral and 15% rear; Vehicle 4: 35% in all 3 windows; Vehicle 5: 50% in the front, 20% in the lateral and 15% in the rear. Descriptive statistics were used and the average of the 3 measurements of VA was considered. Wilcoxon Test was applied to compare the average visual acuity in each vehicle and position. P value<0.05 was considered statistically significant. Results: According to the Brazilian Traffic Regulations for driving in categories C/D/E, when low contrast was tested in the front window, all visible light transmissions were borderline, in the lateral window they were all outside the limit, while in the rear window for both low and high contrast, all visible light transmissions tested were outside the limit and also borderline for driving in categories A/B, with the exception of the vehicle with visible light transmission of 35%. Conclusion: Visual acuity is affected, especially in the rear window, by the use of automotive films. The study is an alert that window films is a possible cause of accidents and may contribute to the revision of traffic regulations worldwide.info:eu-repo/semantics/openAccessSociedade Brasileira de OftalmologiaRevista Brasileira de Oftalmologia v.81 20222022-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-72802022000100215en10.37039/1982.8551.20220034
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Ramos,Carolina do Val Ferreira
Pap,Luciana Piacente
Chivante,Deborah Reuter Amaral
Prodocimo,Larissa Maria
Walsh,Aileen
Crema,Camilla Walsh
Crema,Armando Stefano
Schor,Paulo
spellingShingle Ramos,Carolina do Val Ferreira
Pap,Luciana Piacente
Chivante,Deborah Reuter Amaral
Prodocimo,Larissa Maria
Walsh,Aileen
Crema,Camilla Walsh
Crema,Armando Stefano
Schor,Paulo
Do automotive window films affect drivers’ safety by decreasing vision sensitivity? A Cross-sectional study
author_facet Ramos,Carolina do Val Ferreira
Pap,Luciana Piacente
Chivante,Deborah Reuter Amaral
Prodocimo,Larissa Maria
Walsh,Aileen
Crema,Camilla Walsh
Crema,Armando Stefano
Schor,Paulo
author_sort Ramos,Carolina do Val Ferreira
title Do automotive window films affect drivers’ safety by decreasing vision sensitivity? A Cross-sectional study
title_short Do automotive window films affect drivers’ safety by decreasing vision sensitivity? A Cross-sectional study
title_full Do automotive window films affect drivers’ safety by decreasing vision sensitivity? A Cross-sectional study
title_fullStr Do automotive window films affect drivers’ safety by decreasing vision sensitivity? A Cross-sectional study
title_full_unstemmed Do automotive window films affect drivers’ safety by decreasing vision sensitivity? A Cross-sectional study
title_sort do automotive window films affect drivers’ safety by decreasing vision sensitivity? a cross-sectional study
description ABSTRACT Objective: To measure visual acuity in high contrast and low contrast sensitivities in different grades of visible light transmission films in three different positions (front, lateral and rear windows). Methods: Forty-four healthy volunteers between 30-75 y-o, with BCVA better than 0,5, were tested in the 5 following vehicles with different grades of visible light transmission films. Vehicle 1: 75% in the front and 70% in the lateral and rear windows; Vehicle 2: 70% in the front and lateral windows and 28% in the rear; Vehicle 3: 70% in the front, 28% in the lateral and 15% rear; Vehicle 4: 35% in all 3 windows; Vehicle 5: 50% in the front, 20% in the lateral and 15% in the rear. Descriptive statistics were used and the average of the 3 measurements of VA was considered. Wilcoxon Test was applied to compare the average visual acuity in each vehicle and position. P value<0.05 was considered statistically significant. Results: According to the Brazilian Traffic Regulations for driving in categories C/D/E, when low contrast was tested in the front window, all visible light transmissions were borderline, in the lateral window they were all outside the limit, while in the rear window for both low and high contrast, all visible light transmissions tested were outside the limit and also borderline for driving in categories A/B, with the exception of the vehicle with visible light transmission of 35%. Conclusion: Visual acuity is affected, especially in the rear window, by the use of automotive films. The study is an alert that window films is a possible cause of accidents and may contribute to the revision of traffic regulations worldwide.
publisher Sociedade Brasileira de Oftalmologia
publishDate 2022
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-72802022000100215
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