Question

What are optical and non-optical aids?

Answer 1

Hint:Some people, including children, may be visually impaired. They have very restricted vision and can only see a few things at a time. Some people have been blind since birth. Some people may lose their sight as a result of sickness. These people strive to recognize things by touching them and listening to their voices more carefully. They sharpen the development of their other senses. Additional resources, on the other hand, can allow them to develop their abilities. There are two categories of resources: non-optical aids and optical assistance. Non-optical aids are for blind persons who identify items by touching and listening, whereas optical aids are for visually impaired people who have poor vision.

Complete step-by-step solution:
Optical aids:
Optical aids are one or more lenses that have been positioned between the eyes and the object to magnify or enlarge the retinal image. It might be as simple as a glass lens for better seeing the details of a figure or as complex as a sophisticated telescope for both far and near vision.
Examples:
Lenses and telescopic aids are examples of optical aids. While appropriate lens combinations are utilized to correct visual deficiencies, telescopic aids can assist in viewing class demonstrations and the chalkboard.
Non-Optical aids:
Non-optical aids are core components that can improve visual resolution. These features do not require the employment of a magnifying lens to increase visual function, but they can be utilized in addition to or in substitute of optical devices in some cases.
Examples:
Tactual aids the visually challenged can learn to read and write by using the Braille touch method. This technology employs raised dots on paper.
Auditory aids (those that use their hearing) include audio cassettes, tape recorders, audio CDs, audiobooks, and electrical equipment such as computers, calculators, and closed-circuit television. These may convert text files to sound with the use of a software program.
Note:Low-power magnifiers, microscopes, telescopes, and specialized devices such as borescopes, endoscopes, and other fiber-optic devices for inspecting restricted access locations are examples of optical aids. These items can also be utilized in conjunction with television camera systems. Non-optical aids are a variety of low-tech and mid-tech non-optical gadgets that assist people with impaired vision in accessing print and completing tasks visually. Non-optical devices range in technology from low to high.