Do Color-Deficient Observers Take Longer to Complete a Color-Related Task?

Ramaswamy, Shankaran; Hovis, Jeffery K.

doi:10.1097/opx.0b013e3181b2f7c1

Cited by 3 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The poor visual search performance index of individuals with CVD relative to normal trichromats is consistent with several other previous studies [8,9,16,19]. The results agree with the study by Cole and Lian (2006) who assessed visual search in individuals with CVD using Panel B shows the differences in performance index with regards to various colour combinations in individuals with CVD (as a group as well as subgroup) relative to normal trichromats.…”

Section: Discussionsupporting

confidence: 91%

“…However, lab-based visual search tasks that use specific-coloured target shapes (such as triangles or circles) do not reflect the suitability of an individual with CVD for a given profession. Thus, 'occupation-based' tests such as identifying coloured signals encountered in traffic [8] and colour-naming tasks in the visual display unit (used in railways) [9] are important. Colour-related visual search in a real-world activity such as searching for a red-coloured object on a grass lawn, [10] resembles the tasks encountered every day.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The impact of display saturation on visual search performance in congenital colour vision deficiency

Hathibelagal

2023

PLoS ONE

View full text Add to dashboard Cite

Background Colour-related search tasks are common in many professional fields. The study investigated whether increasing chromatic saturation can enhance the visual performance of individuals with colour vision deficiency (CVD) in colour-related search tasks. Methods 10 normal trichromats (5M, 5F; Mean (SD) age: 23.1 (3.3) years) and 15 individuals with CVD [8 deutans and 7 protans identified by HRR plates] (14M, 1F; aged 28.6 (8.7) years) participated in this study. Four naturalistic sceneries of everyday tasks/ birds, animals and flowers of 15 different colour combinations (1 pair of colours in each combination. e.g., ‘brown/black’ or ‘red/green’) were presented in ‘low’ saturation, ‘original’ (unaltered images) and ‘high’ saturation condition using the Psychopy program on a colour-calibrated monitor. On each trial, the subject was asked to identify a specific-coloured target. Results Overall, the visual search performance index (expressed as product of accuracy and a reciprocal of reaction time (%correct*s-1) of the normal trichromats [Mean (SD):77.76% correct*s-1 (16.32)] was significantly higher than CVD [45.71% correct*s-1 (18.95)] in the “original” test images (p = 0.001), but in individuals with CVD, there was no significant difference between ‘original’ [45.71% correct*s-1 (18.95)] and ‘high’ saturation condition ([47.43% correct*s-1 (20.07)]; p > 0.05). However, colour-wise, increased saturation showed improvements (≥ 10%) in protans mainly for ‘red’ combinations with other colours such as white (i.e., ‘red/white’), purple, orange, grey, green, brown and black. Conclusion The study suggests that increasing the saturation of certain colour combinations can potentially aid in the visual search performance of individuals with CVD. This knowledge will help in better counselling and management of the patients.

show abstract

Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

The impact of display saturation on visual search performance in congenital colour vision deficiency

Hathibelagal

2023

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…In many public areas, pastel colours are used, which may cause difficulties in perceiving the differences between various surfaces, and therefore be a risk of falling. However, according to Wijk (27), elderly easily perceive small subtleties in red and yellow colours but less in green and blue, although as many as 8% of the men and 0.5% of the women have red‐green colour vision defects (28) which may affect the individual when performing colour‐related tasks (29). All of the aspects should be considered when fall prevention actions are taken by the society such as using bright colours and contrasts, and taking into account the people having red‐green vision defects when planning public buildings and areas.…”

Section: Discussionmentioning

confidence: 99%

Perceived vision‐related quality of life and risk of falling among community living elderly people

Källstrand-Eriksson

Baigi²,

Buer

et al. 2012

Scandinavian Caring Sciences

View full text Add to dashboard Cite

Falls and fall injuries among the elderly population are common, since ageing is a risk factor of falling. Today, this is a major problem because the ageing population is increasing. There are predictive factors of falling and visual impairment is one of them. Usually, only visual acuity is considered when measuring visual impairment, and nothing regarding a person's functional visual ability is taken into account. Therefore, the aim of this study was to assess the perceived vision-related quality of life among the community living elderly using the 25-item National Eye Institute Visual Function Questionnaire (NEI VFQ-25) and to investigate whether there was any association among vision-related quality of life and falls. There were 212 randomly selected elderly people participating in the study. Our study indicated that the participants had an impaired perceived vision-related health status. General health was the only NEI VFQ-25 variable significantly associated with falls in both men and women. However, among men, near and distance activities, vision-specific social functioning, role difficulties and dependency, color and peripheral vision were related to falls.

show abstract

“…Category bands and total difficulties score (0-40) are used to classify as 'normal', 'borderline' and 'abnormal'. 30 For the self-reported SDQ, 'normal' score is between 0-15, 'borderline' is between [16][17][18][19] and 'abnormal' is 20-40. For the teacher-report SDQ, the 'normal' score is between 0-11, 'borderline' is between 12-15 and 'abnormal' is 16-40.…”

Section: The Strength and Difficulties Questionnairementioning

confidence: 99%

“…This can affect their learning ability with colour-related tasks. 8,[17][18][19][20] Consequently, young children with CVD were often mistaken as slow learners or ridiculed in preschool. 21,22 This may cause embarrassment to the child and lead to significant consequences such as school refusal or social withdrawal.…”

Section: Introductionmentioning

confidence: 99%

Behavioural Issues among Primary Schoolchildren with Colour Vision Deficiency

Nithiyaananthan

Kaur

Anne

et al. 2020

imjm

View full text Add to dashboard Cite

Introduction: Colour vision deficiencies may raise behavioural changes among children. This study explores the presence of any behavioural issues faced by primary schoolchildren with congenital red-green colour vision deficiency (CRGCVD). Materials and Methods: Male schoolchildren, aged 8-11 years old, from 10 randomly selected schools in Klang Valley were screened using Ishihara plates and Farnsworth D-15 test. Children with CRGCVD (study group) and without CRGCVD (control group) were asked to complete the Strength and Difficulties Questionnaire (SDQ) for children (self-report) while their class teachers completed the SDQ for teachers (teacher- report). Difficulty scores were calculated. The test categorised behaviour into 3 categories based on the difficulty scores into ‘normal’, ‘borderline’ and ‘abnormal’ behaviours. Nonparametric test was used to compare the median of difficulty scores between control group and study group. Spearman correlation was used to determine association between self-report SDQ and teacher-report SDQ. Results: A total of 134 schoolchildren were recruited in this study, of which 44 had CRGCVD and 90 were in the control group. Teacher-reported SDQ for the children were obtained from 134 teachers. No statistically significant differences (p>0.05) were noted between the total SDQ scores of children with and without CRGCVD using self-report SDQ and teacher-report SDQ. The total difficulty scores of self-report SDQ and teacher-report SDQ were poorly but significantly correlated. Teachers rated 9.09% of children with CRGCVD as falling under the ‘abnormal’ category, slightly higher than self-rated of 2.27%. Conclusion: This study found no prominent behavioural issues among schoolchildren with CRGCVD.

show abstract

Do Color-Deficient Observers Take Longer to Complete a Color-Related Task?

Cited by 3 publications

References 11 publications

The impact of display saturation on visual search performance in congenital colour vision deficiency

The impact of display saturation on visual search performance in congenital colour vision deficiency

Perceived vision‐related quality of life and risk of falling among community living elderly people

Behavioural Issues among Primary Schoolchildren with Colour Vision Deficiency

Contact Info

Product

Resources

About