DOI: 10.5061/dryad.0vt4b8h49
title: Raw data of visual search parameters of individuals with normal trichromacy and colour vision deficiency

description: 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 &gt; 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.
description: The data is collected is based on a visual search task. The
 participants are required to perform a visual search task which involves
 identifying targets of varying difficulty in sceneries. The time taken for
 the correct response and accuracy is calculated, which is used towards the
 calculation of performance index (product of speed and
 accuracy).
description: # Raw\_datasheet\_CVD\_search.xlsx describes the data obtained in three
 different levels of saturation in two groups of subjects (normal
 trichromats and cvd) ### Description of the data and file structure There
 are two sheets in the Excel sheet. One sheet contains the data obtained
 for each of the CVD followed by sheet obtained for normal trichromats. The
 three key terms are obtained for each colour combinations in each of the
 three saturation conditions (low, original and high) are accuracy,
 reaction time and performance index. Performance index is a measure that
 summarises both reaction time and accuracy. The colour combinations are
 arranged in alphabetical order. The type of defect is also marked
 separately in a column. Out of 15 subjects with CVD, 8 had deutan
 deficiency and whereas 7 had protan deficiency Sd column represents the
 standard deviation of the reaction time. Figures 4 to 6 can be derived
 using the data provided in this excel sheet. Missing/incalculable data
 marked as n/a Reaction times are available for those trials in which the
 participant was able to provide a correct response. Reaction times are not
 available for wrong responses or in which participant has not provided
 within the specified time interval. Those cells are marked as
 'n/a'. Subsequently, the corresponding accuracy and performance
 index was also marked as 'n/a' 'n/a' in SD is given
 when only one of image of the four available for a given colour
 combination yielded a valid reaction time.