TY - JOUR 
A1 - García Rojo, Marta
AU - Bonnin-Arias, Cristina
AU - Chamorro Gutiérrez, Eva
AU - Álvarez Peregrina, Cristina
AU - Sánchez-Ramos Roda, Celia
T1 - Development of a Method to Potentially Substitute Direct Evaluation of Mesopic Visual Acuity in Drivers
Y1 - 2021
SN - 1660-4601

UR - http://hdl.handle.net/11268/10048
AB - Background: In mesopic lighting conditions, or under adverse environmental circumstances, visual information is reduced, which increases the risk of traffic accidents. This effect could be reduced with a precise evaluation of the visual function under mesopic conditions, but it is difficult to replicate in clinics. This study aims to develop an easy-to-adopt method to evaluate mesopic visual acuity (VA) in drivers. (2) Methods: Prospective and observational study in drivers. logMAR mesopic VA was compared with photopic VA measured under different combinations of contrast charts and filters to find the combination that responds best to mesopic conditions. (3) Results: Fifty-six drivers were examined. The best correlation was found with an 80% density filter and a Weber contrast chart of 20%. The logMAR VA for this combination was 0.01 ± 0.11, which was close to the mesopic VA values (0.01 ± 0.12). The difference between both logMAR VA was 0.00 ± 0.06 (R = 0.86; p ≤ 0.001; ICC = 0.86). (4) Conclusions: The use of 20% contrast optotypes and the interposition of an 80% filter under photopic conditions provide VA values similar to those measured under mesopic lighting conditions, making this simple system a good predictor of mesopic VA values.
KW - Visión nocturna
KW - Agudeza visual
KW - Envejecimiento
KW - Vista
KW - Vehículo automotor
KW - Oftalmología
LA - eng
ER -