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"Blindness psychology."
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Coping with vision loss : understanding the psychological, social, and spiritual effects
Through literature, media, and cinema across the ages, the authors focus attention on how the masses worldwide who are sighted view, and treat, the blind and legally blind. Coping with Vision Loss: Understanding the Psychological, Social, and Spiritual Effects also includes non-fiction written about and by the blind that gives great insight into their condition. The text explains what the visually impaired and blind can do to stay strong and live their lives to the fullest, as well as what family members and friends can do to help when needed, or to back off when one wants to be as independent as possible. Technological advances to assist the blind and legally blind are reviewed, as are websites for a host of organizations created to assist people with vision loss.
Book
Blind vision : the neuroscience of visual impairment
An investigation of the effects of blindness and other types of visual deficit on cognitive abilities.
eBook
The role of visual experience in the production of emotional facial expressions by blind people: a review
Facial expressions of emotion are nonverbal behaviors that allow us to interact efficiently in social life and respond to events affecting our welfare. This article reviews 21 studies, published between 1932 and 2015, examining the production of facial expressions of emotion by blind people. It particularly discusses the impact of visual experience on the development of this behavior from birth to adulthood. After a discussion of three methodological considerations, the review of studies reveals that blind subjects demonstrate differing capacities for producing spontaneous expressions and voluntarily posed expressions. Seventeen studies provided evidence that blind and sighted spontaneously produce the same pattern of facial expressions, even if some variations can be found, reflecting facial and body movements specific to blindness or differences in intensity and control of emotions in some specific contexts. This suggests that lack of visual experience seems to not have a major impact when this behavior is generated spontaneously in real emotional contexts. In contrast, eight studies examining voluntary expressions indicate that blind individuals have difficulty posing emotional expressions. The opportunity for prior visual observation seems to affect performance in this case. Finally, we discuss three new directions for research to provide additional and strong evidence for the debate regarding the innate or the culture-constant learning character of the production of emotional facial expressions by blind individuals: the link between perception and production of facial expressions, the impact of display rules in the absence of vision, and the role of other channels in expression of emotions in the context of blindness.
Journal Article
A comparative study of the changes in the quality of life among patients with homonymous hemianopia, monocular blindness, or binocular diplopia
To investigate changes in health-related quality of life (HRQOL), patients with homonymous hemianopia due to unilateral brain damage, monocular blindness with a best-corrected visual acuity of 20/1000 or less, or binocular diplopia for at least 6 months were enrolled. The 25-item National Eye Institute Visual Function Questionnaire (NEI VFQ-25) was used to evaluate the changes in HRQOL before and after the onset of the causative disease within and between the three study groups. The patients were asked to recall their state before disease onset and record it as accurately as possible for each question of the NEI VFQ-25, as well as score their current status. Among 43 included patients, 20 had homonymous hemianopia, 13 had monocular blindness, and 10 had binocular diplopia. The mean patient age was 56 years, and 12 patients were women (28%). A significant decrease in all HRQOL subscale scores was observed in the homonymous hemianopia and monocular blindness groups. In the binocular diplopia group, a lower number of subscales showed decreases in HRQOL. However, the changes in HRQOL before and after disease onset did not differ between groups. In conclusion, HRQOL change before and after homonymous hemianopia and monocular blindness did not differ. Considering the development background of the NEI VFQ-25, this questionnaire may not be sufficiently sensitive to distinguish HRQOL changes between the two disease groups. Hence, the NEI VFQ-25 might be useful for comparing HRQOL changes before and after the onset of a specific disease or before and after treatment, while not being sensitive to differentiate HRQOL differences between diseases. Thus, caution is needed when using the NEI VFQ-25 to compare HRQOL differences between disease groups.
Journal Article
Assistive technology use in domestic activities by people who are blind
People who are blind employ unique strategies when performing instrumental activities of daily living (iADLs), often relying on multiple sensory modalities and assistive technologies. While prior research has extensively explored adaptive strategies for outdoor activities like wayfinding and navigation, less emphasis has been placed on the information needs and problem-solving strategies for managing domestic activities. To address this gap, our study presents insights from 16 semi-structured interviews with individuals who are either legally or completely blind, highlighting both the current use and potential future applications of technologies for home-based iADLs. Our findings reveal several underexplored challenges, including the difficulty of locating misplaced objects, a structured problem-solving approach where digital tools are a last resort, and limited awareness of assistive training programs. Participants also faced persistent usability barriers as software updates disrupted accessibility features. Participants utilize a variety of low-tech and high-tech solutions, with tactile labeling systems and digital assistance apps being particularly prevalent. However, existing assistive technologies often fail to integrate seamlessly with users’ preferred strategies, leading to frustration and underutilization. Addressing these barriers is crucial for enhancing the adoption of assistive technologies and ultimately improving the quality of life for people who are blind.
Journal Article
spontaneous expression of pride and shame: Evidence for biologically innate nonverbal displays
The present research examined whether the recognizable nonverbal expressions associated with pride and shame may be biologically innate behavioral responses to success and failure. Specifically, we tested whether sighted, blind, and congenitally blind individuals across cultures spontaneously display pride and shame behaviors in response to the same success and failure situations--victory and defeat at the Olympic or Paralympic Games. Results showed that sighted, blind, and congenitally blind individuals from >30 nations displayed the behaviors associated with the prototypical pride expression in response to success. Sighted, blind, and congenitally blind individuals from most cultures also displayed behaviors associated with shame in response to failure. However, culture moderated the shame response among sighted athletes: it was less pronounced among individuals from highly individualistic, self-expression-valuing cultures, primarily in North America and West Eurasia. Given that congenitally blind individuals across cultures showed the shame response to failure, findings overall are consistent with the suggestion that the behavioral expressions associated with both shame and pride are likely to be innate, but the shame display may be intentionally inhibited by some sighted individuals in accordance with cultural norms.
Journal Article
The newly sighted fail to match seen with felt
This study uses subjects with newly removed congenital occlusions to demonstrate that object matching between touch and vision is not innate. Formerly blind subjects, when they had their sight restored, were initially unable to visually match an object to a sample they had previously touched, but rapidly developed such cross-modal matching.
Would a blind subject, on regaining sight, be able to immediately visually recognize an object previously known only by touch? We addressed this question, first formulated by Molyneux three centuries ago, by working with treatable, congenitally blind individuals. We tested their ability to visually match an object to a haptically sensed sample after sight restoration. We found a lack of immediate transfer, but such cross-modal mappings developed rapidly.
Journal Article
Helping the Blind to Get through COVID-19: Social Distancing Assistant Using Real-Time Semantic Segmentation on RGB-D Video
The current COVID-19 pandemic is having a major impact on our daily lives. Social distancing is one of the measures that has been implemented with the aim of slowing the spread of the disease, but it is difficult for blind people to comply with this. In this paper, we present a system that helps blind people to maintain physical distance to other persons using a combination of RGB and depth cameras. We use a real-time semantic segmentation algorithm on the RGB camera to detect where persons are and use the depth camera to assess the distance to them; then, we provide audio feedback through bone-conducting headphones if a person is closer than 1.5 m. Our system warns the user only if persons are nearby but does not react to non-person objects such as walls, trees or doors; thus, it is not intrusive, and it is possible to use it in combination with other assistive devices. We have tested our prototype system on one blind and four blindfolded persons, and found that the system is precise, easy to use, and amounts to low cognitive load.
Journal Article
Impact of Hearing Impairment on Independent Travel in Individuals With Normal Vision, Low Vision, and Blindness
Individuals with dual sensory impairment (DSI) often have reduced independence in their daily activities. Vision impairment is consistently reported to play a more dominant role than hearing impairment on home-based daily living, while little is known regarding the relative impact of vision and hearing impairments on tasks such as independent travel that require interacting with more complex environments. To address this knowledge gap, we administered a semistructured survey in a convenience sample of 161 individuals with normal vision, low vision, or blindness, with or without hearing impairment. A combination of qualitative and quantitative approaches was used to analyze the data. Compared to normal vision, low vision and blind participants were significantly less likely to be frequent travelers. Low vision participants reported that vision impairment had a greater impact than hearing impairment on their travel independence, while blind participants reported hearing impairment to have a greater impact than blindness on their travel independence. The unique challenges in blind individuals were highlighted by their concerns on localizing dynamic sounds such as traffic during travel. Seventy percent of the hearing-impaired participants wore hearing aids and reported high utility for speech perception, but there was a significant reduction in the utility of hearing aids for sound localization especially for the blind participants. Our results reveal the interaction between vision and hearing impairments on independent travel and emphasize the need for an integrated rehabilitation approach for this population.
Journal Article
As if by Magic
Magicians claim that an abrupt change in the direction of movement can attract attention, allowing them to hide their method for a trick in plain sight. In three experiments involving 43 total subjects, we tested this claim by examining whether a sudden directional change can induce change blindness. Subjects were asked to detect an instantaneous orientation change of a single item in an array of Gabor patches; this change occurred as the entire array moved across the display. Subjects consistently spotted the change if it occurred while the array moved along a straight path but missed it when it occurred as the array changed direction. This method of inducing change blindness leaves the object in full view during the change; requires no additional distractions, visual occlusion, or global transients; and worked in every subject tested here. This phenomenon joins a body of magic-inspired work that yields insights into perception and attention.
Journal Article