Acī „noklīdušās” gaismas ietekme uz redzes asumu un kontrastjutību
Date
2010
Authors
Kaužena, Zane
Journal Title
Journal ISSN
Volume Title
Publisher
Latvijas Universitāte
Abstract
Darba mērķis: novērtēt vai jauniem autobraucējiem redzes funkciju pārbaudei pietiek ar redzes asuma un kontrastjutības testu veikšanu, vai arī nepieciešams pārbaudīt acī „noklīdušās” gaismas daudzumu. Kā arī atkārtot eksperimentu, kas ir minēts literatūrā un pārbaudīt iepriekš izgatavotas iekārtas mērījumu precizitāti
Subjekti un metode: Eksperimentā piedalījās 28 subjekti vecumā no 19 līdz 23 gadiem. Acī „noklīdušās” gaismas daudzumu noteica ar iepriekš izgatavotu ierīci, kas darbojās pēc tiešās kompensējošās metodes principa. Redzes asums un kontrastjutība tika noteikta izmantojot FrACT testu.
Rezultāti: Starp redzes asumu un acī „noklīdušo” gaismu noteikta vidēji cieša korelācija (R=0,59). Starp kontrastjutību un acī „noklīdušo” gaismu ir vāja kontrastjutība (R=0,05).
Secinājumi: Neskatoties uz vidēji ciešo korelāciju acī „noklīdušās” gaismas daudzumam ar redzes asumu, pēc literatūras datiem, pilnai šoferu redzes kvalitātes novērtēšanai bez redzes asuma un kontrastjutības testiem būtu nepieciešams izmantot arī acī „noklīdušās” gaismas mērījumus, kuri vairāk korelē ar šoferu sūdzībām par žilbšanu, vadot auto naktī.
Atslēgas vārdi: acī „noklīdusī” gaisma, redzes asums, kontrastjutība.
Purpose: to assess whether young drivers need to check only visual acuity and contrast sensitivity or also need to check amount of straylight. And repeat the experiment, which is mentioned in the literature and verified in advance made equipment for the measurement accuracy Subjects and methods: 28 subjects in age 19 -23 years have taken part in experiment. Amount of retinal straylight was measured according to principles of direct compensation method. Visual acuity and contrast sensitivity was measured using FrACT computer program. Results: Between visual acuity and retinal straylight was determined correlation (R=0.59). Between contrast sensitivity and retinal straylight was determined week correlation (R=0.05). Conclusions: in spite of the correlation of retinal straylight quantity with a visual acuity, in literature mentioned that a full driver's visual quality assessment without the visual acuity tests and contrast sensitivity would be necessary to use retinal straylight measurements, which are more correlated with drivers' complaints about glare, driving a car at night. Keywords: retinal straylight, visual acuity, contrast sensitivity
Purpose: to assess whether young drivers need to check only visual acuity and contrast sensitivity or also need to check amount of straylight. And repeat the experiment, which is mentioned in the literature and verified in advance made equipment for the measurement accuracy Subjects and methods: 28 subjects in age 19 -23 years have taken part in experiment. Amount of retinal straylight was measured according to principles of direct compensation method. Visual acuity and contrast sensitivity was measured using FrACT computer program. Results: Between visual acuity and retinal straylight was determined correlation (R=0.59). Between contrast sensitivity and retinal straylight was determined week correlation (R=0.05). Conclusions: in spite of the correlation of retinal straylight quantity with a visual acuity, in literature mentioned that a full driver's visual quality assessment without the visual acuity tests and contrast sensitivity would be necessary to use retinal straylight measurements, which are more correlated with drivers' complaints about glare, driving a car at night. Keywords: retinal straylight, visual acuity, contrast sensitivity
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