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