Chapter 7: Environmental Design: Accomodating Sensory Changes In The Older Adult Flashcards
Is the important in identifying environemtnal cues and distinguishing environmental hazards
Vision
A decrease in both peripheral and upper visual fields accelerates with aging
Visual Field
The capacity of the eye to discriminate fine details of objects in the visual field, generally declines with age, although this decline is not universal or inevitable
Visual Acuity
Within the environment, declining visual acuity necessitates a stronger stimulus or light source
Illumination
When lllumination is increased, care must be exdrcise to avoid excessive and intensive illumination, which can creat hazard for older persons int he form of ___
Glare
Dark adaptation, or the ability of the eye to become more visually sensitive after remaining n darkness for a period of time, is delayed in older persons
Dark adaptation
The ability of the eye to focus images on the retina independent of objects distances, is impaired with aging
Accomodation
The ability to perceive, differentiate, and distinguish colors declines with aging as a result to changer in retinal cones, the retinal bipolar and ganglion cells, the visual pathways that terminate in the occipital cortex and the lens
Color
The ability to discriminate between degrees of brightness appears to decrease in individuals age 60 ears and older
Contrast
Related to loss of color discrimination is change in depth perception, or the ability to estimate the relative distance and relief of objects
Depth perception
Provides primary link that allows individuals to identify with the environment and communicate effectively
Hearing
Conductive hearing loss results from dysfunction of the external ear, the middle ear, or both.
Conduction Hearing Loss
Sensorineural hearing loss occurs when there is a dysfunction in conversion of sound waves to electrical signals by the inner ear or dysfunction in transmission of nerve impulses to the brain.
Visual Sensorineural Hearing Loss
both intertwine to provide additional links with the environment.
Taste and Smell
Although there is no agreement on the cause, it is known that the number of taste buds decreases with age. By age 60 years, most people have lost approximately half of their taste buds.
Taste
Research on olfactory sensitivity and smell is contradictory, but sensation appears to decline as a result of age, as well as a result of other factors associated with age. These factors may include continuous expo- sure to odor, leading to decreased acuity, or exposure to environmental pollutants or smoking.
Smell
is a complicated human response that involves many separate processes—including touch, temperature, pain, as well as vibration sensitivity, kinesthesia, and stereognosis.
Touch
Degenerative changes in Meissner corpuscles may result in decreased sensitivity of the skin on the palm of the hand and sole of the foot but not of hairy skin. The resultant decrease in touch acuity can affect the ability of older individuals to localize stimuli.
Tactile Sensitivity
Changes in vascular circulation and loss of subcutaneous tissue in older individuals may result in changes in thermal sensitivity and impaired ability to cope with extreme environmental temperatures.
Thermal Sensitivity
Examples of accommodations that should be considered include use of enhanced lighting and provision of contrast in personal living space to deter falls that result from decreased vision and the use of smoke detectors with visual cues to decrease vulnerability to death from fires in older individuals with decreased ability to hear and smell.
Personal / Living Space
Problems with depth perception, glare, and visual misinterpretation
Visual Ability
care is exercised to choose floor coverings or carpeting that avoids patterns
or borders that increase visual spatial difficulties and focus on strong color contrast.
Dementia
Increasing light levels during activities may be effective in reducing these agitation levels.
Agitation
Excess noise is a known stressor. To minimize these hallucinations and the
associated stress, it is important to reduce background noise.
Auditory halluciantions
is important, and can have a therapeutic effect for individuals with dementia.
Touch