Non-Optical Devices Flashcards
A form of assistive technology that is used to increase, maintain or improve the functional capabilities of individuals with sight loss
Non-optical devices
7 categories of non-optical devices
Relative size or sometimes referred to as larger assistive devices
Glare, contrast and lighting control devices
Posture and comfort maintenance devices
Hand writing and written communication devices
Orientation and mobility techniques and devices
Sensory substitution devices
Medical management and life skill devices
Best example of relative size magnification
Large print materials
Recommended to prepare large print materials
Arial narrow
Double line spacing
18 font size
Arial 12 is called
Clear print
14 point size is called
Large prints
Advantage of relative size
Cosmesis
Disadvantages of relative size
Books are too heavy or bulky
Less availability
Patients with retinitis pigmentosa may use
Flashlight since higher illumination is required
Conditions like glaucoma and cataracts are recommended to use
Different tinted lenses to control glare
Patients with albinism may require to have
Proper seating arrangement against direct sun or use of curtain or blinds
Example of glare, contrast, and lighting control devices
Adjustable wall lamps
Adjustable table lamps
Adjustable clip lamps
Halogen lamps
Should be recommended to ease some of the discomfort
Adjustable reading stands
Constructed from a piece of black cardboard which has a slit cut into it
Writing guides
The black colour of the writing guide enhances?
Contrast over reading and writing materials