Dynamic visual acuity: Normative functions and practical implications

Long, Gerald M.; Penn, David L.

doi:10.3758/bf03330347

Cited by 17 publications

(3 citation statements)

References 12 publications

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“…However, the correlation between DVA and SVA was not significant, according to a different study (63), probably because SVA is related to the discriminative ability of the eye, whereas DVA is related to VOR function. It is common to find significant individual differences in DVA in subjects with similar SVA (64).…”

Section: Svamentioning

confidence: 99%

Challenges and Current Research Status of Vertigo/Vestibular Diseases

2024

Frontiers Research Topics

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Frontiers is more than just an open access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers journal seriesThe Frontiers journal series is a multi-tier and interdisciplinary set of openaccess, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers journal series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to qualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers journals series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area.

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Section: Svamentioning

confidence: 99%

Challenges and Current Research Status of Vertigo/Vestibular Diseases

2024

Frontiers Research Topics

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“…Slide Task. A facsimile of the traditional DVA device used by Miller and Ludvigh in the 50's (and by Long in the 80's [e.g., Long & Penn, 1987;Long & Rourke, 1989) was constructed. This device uses Landolt C optotypes which are projected onto a mirror which is affixed to a rotating post and these targets are then delivered to a large (1.5 meter radius) highly reflective (>80%) curved white screen via a slide projector.…”

Section: Tasksmentioning

confidence: 99%

A Portable Device for Dynamic Visual Acuity

Kennedy

Compton

Drexler

et al. 1999

Proceedings of the Human Factors and Ergonomics Society Annual

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Dynamic visual acuity (DVA) thresholds are among the few visual functions found predictive of automobile accidents. DVA is sensitive to alcohol and aging. In two within-subject, repeated-measures designs, a laser DVA device was compared to the traditional device. Both tasks were administered to two groups: Group I received graded stimuli at 60, 75 & 90 degrees per second (dps); Group II at 60, 90 & 120 dps. Testing involved different target sizes, velocities, type of target, and time course changes within a session. Findings: 1) retest reliabilities of the two DVA devices were comparable and higher with the laser; 2) average correlations between the devices were r = 0.62 (p < .01) and r = 0.65 (p < .01) for Group I and II respectively. In spite of the known differences in implementation, the laser device can be developed to measure the same construct as the more traditional DVA device, and the laser is considerably more flexible.

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“…Con la honrosa excepción del profesor Gerald Long (Long et al 1987(Long et al , 1988(Long et al , 1989(Long et al , 1990(Long et al , 1991(Long et al , 1993(Long et al , 1998(Long et al , 2002 de la Universidad de Villanova (Pennsylvania), los trabajos más relevantes fueron desarrollados entre los años 50 y 70. La mayoría de estos estudios se centraron principalmente en determinar las influencias que sobre la AVD presentaban características del estímulo móvil como el tamaño, el contraste, la velocidad angular de desplazamiento y el tiempo de exposición.…”

Section: Concepto Relaciones E Implicacionesunclassified

Evaluación de la Agudeza Visual Dinámica: una aplicación al contexto deportivo

Quevedo Junyent

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The importance of vision in life is unquestionable. It is because of this that optometry, as a science of vision focused in measurement and analysis of visual function, has been developing techniques and instruments to evaluate its functionality in various contexts. Sport has become a social phenomenon, as evidenced by an increasing trend towards active participation, both professionally and recreationally. In order to enhance athletic performance, many have looked towards the sciences (medicine, biomechanics, psychology) for answers. With the specialization of sports vision, optometry has been particularly useful. The importance of the science of vision relating to sports is easily justified by considering that, in general, vision plays a dominant role in athletic success since the majority of external stimuli that athletes have to react to come through the visual system. One of the most critical areas that Sports Vision incorporates is the specific screening of visual capacities related to sports performance. If we consider the dynamic characteristics of most sporting modalities that generally involve constant environmental changes, sudden and fast movements of players and ball, speed, etc., we have to accept the premise that action sports require visual performance evaluation that is different from normal vision testing, since routine testing only samples static vision. Assessment of specific sports-related visual abilities includes peripheral vision, visual reaction time or dynamic visual acuity. In reference to the evaluation of dynamic visual acuity, defined as the ability to resolve a target under conditions of relative motion between the observer and the test stimulus, it must be noted that methods developed to date for its measurement have not been, in general, psychometrically validated, and are too cumbersome and unwieldy to find a place in clinical practice or in field situations. This lack of proper equipment explains much the difficulty of establishing objective, precise and reliable measurements of a visual skill, considered, not only from the sporting context but also from road safety or aircraft operating, as one of the most predictive of real-world task performances, especially in dynamic conditions." Additionally, the need to improve our daily work giving visual attention to elite athletes in the Olympic Training Centre in Sant Cugat del Vallés has led us to develop this doctoral dissertation, with the design of the DinVA 3.0., a computer assisted test for the measurement of dynamic visual acuity. The efficacy of our instrument has been supported by four experimental studies. The first three, included into the psychophysics context, have allowed us to find the legitimacy of the DinVA test measurement by establishing its construct validity, as well as internal and temporal consistency. The last experiment is a differential study where we compared the results of dynamic visual acuity obtained by a sample of elite water polo players and a group of totally sedentary students of Optometry. The obtained results have shown that speed, contrast and direction of displacement of the stimulus significantly affect dynamic visual acuity, supporting the construct validity of the DinVA3.0. Additionally, we have verified that our instrument to measure dynamic visual acuity has a high degree of internal validity, as well as a high test-retest reliability of the obtained measures. Finally, we have been able to establish that athletic training seems to improve dynamic visual acuity. In conclusion, with this doctoral dissertation we aim at offering both, clinicians and researchers, a standardized and typified instrument that allows a solid and specific measure of dynamic visual acuity depending on the application context. It is easy to use, offers the possibility of training, and does not require more equipment than something so common and ubiquitous as a computer.

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Dynamic visual acuity: Normative functions and practical implications

Cited by 17 publications

References 12 publications

Challenges and Current Research Status of Vertigo/Vestibular Diseases

Challenges and Current Research Status of Vertigo/Vestibular Diseases

A Portable Device for Dynamic Visual Acuity

Evaluación de la Agudeza Visual Dinámica: una aplicación al contexto deportivo

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