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Measurement of Dynamic Visual Acuity with Augmenting Landolt Rings

  • Purpose The purpose of this study was to investigate the correlation of measured visual acuity (VA) both static and dynamic obtained with static and dynamic measuring tests, as well as, response time to visual stimulus and analysis of its influence on dynamic visual acuity. The aim was to compare the results gathered for the three age groups and analyze the possible differences. Methods The test groups consisted of 75 subjects between 10 and 60 years old, categorized in three age groups. The measurements of static and dynamic visual acuity and reaction time were conducted. The set of nine tests (five with radial magnification speed and four simulating driving condition at 72 km/h and 130 km/h) was designed in order to measure dynamic visual acuity and the set of two tests for reaction time measurement. Results Compared to static visual acuity in both tests, the results obtained with measurements of dynamic visual acuity resulted in lower values depending on Landolt ring size and magnification speed of animation. In average, the dynamic visual acuities in tests with different magnification speeds were lower than static by 0.4 visual acuity units, or 31% and the average of dynamic visual acuity after subtracting motoric component (reaction time) was for 0.2 visual acuity worse than static or 15%. In the second test simulating driving conditions at 72 km/h the average drop in dynamic visual acuity was 33% while at 130 km/h average drop for younger and middle age groups was 37% and for older group was 44% and after subtracting motor component values for 72 km/h speed simulation average drop in visual acuity values was 23% for all three groups; for 130 km/h speed simulation younger and middle aged group average drop of visual acuity was 20% and with older group it was 24%. Conclusion The tests used in this study were simple and fast and revealed significant difference between static and dynamic visual acuity and influence of reaction time on dynamic Nataša Vujko Muždalo Abstract 2 visual acuity values. It is hoped that this thesis will be a positive contribution in testing and training of dynamic visual and sensory response skill with drivers, sportsmen and people with visual-motor dysfunction. Keywords: Dynamic visual acuity (DVA), static visual acuity (SVA), reaction time (RT), motoric component, dynamic visual acuity test, reaction time test, radial increase in size

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Author:Nataša Vujko Muždalo
Document Type:Master's Thesis
Date of Publication (online):2015/12/16
Publishing Institution:Hochschule Aalen
Granting Institution:Hochschule Aalen, Optik und Mechatronik
Date of final exam:2015/07/31
Release Date:2016/01/07
Open Access:Open Access
Licence (German):License LogoVeröffentlichungsvertrag für Publikationen mit Print on Demand