Question

What are optical and non-optical aids?

Answer 1

Optical aids:

1. Optical aids are one or more lenses that are placed between the eyes and the object.
2. It is used to magnify or enlarge the retinal image.
3. Optical aids are for visually impaired people who have limited vision.

Non-optical aids:

1. Non-optical visual aids are those that do not use magnifying lenses to improve vision.
2. They can supplement or even replace other types of visual aids.
3. Non-optical aids are for blind people who identify things by touching and listening.