**Difference between Non-Optical Aid and Optical Aid**

**Non-Optical Aid:**
Non-optical aids are devices or tools that assist individuals with disabilities in performing daily tasks or activities without the use of visual or optical assistance. These aids are designed to compensate for sensory impairments and help individuals with limited vision or blindness to navigate their surroundings, communicate, and complete various tasks independently.

**Examples of Non-Optical Aids:**

1. **Mobility Aids:** These aids include canes, walkers, and guide dogs, which help individuals with visual impairments to navigate their environment safely and independently.

2. **Braille Devices:** Braille is a tactile writing system used by individuals who are blind or have low vision. Non-optical aids such as braille embossers, braille displays, and braille notetakers allow individuals to read and write using the Braille system.

3. **Screen Readers:** These software applications convert text on a computer screen into synthesized speech or braille output. Screen readers enable individuals with visual impairments to access digital content and navigate computer systems.

4. **Talking Books:** Non-optical aids such as audiobooks or talking books provide individuals with visual impairments access to literature and educational materials. These books are recorded in audio format, allowing users to listen to the content instead of reading it.

5. **Tactile Graphics:** Tactile aids include raised-line drawings, tactile maps, and tactile diagrams, which provide individuals with visual impairments access to visual information through touch.

**Optical Aid:**
Optical aids, on the other hand, are devices or tools that assist individuals with visual impairments by enhancing their remaining vision. These aids utilize optical technology to improve visual acuity, field of view, or contrast sensitivity, allowing individuals to perform tasks that require visual input more effectively.

**Examples of Optical Aids:**

1. **Magnifiers:** Optical aids like magnifying glasses, handheld magnifiers, and stand magnifiers enlarge text, images, and objects, thereby improving visibility for individuals with low vision.

2. **Telescopes:** These aids are used to view objects or images from a distance. Telescopic devices help individuals with limited vision to see faraway objects or details more clearly.

3. **Closed Circuit Television (CCTV):** A CCTV system consists of a camera and a monitor, allowing individuals with low vision to magnify and view printed materials, photographs, or objects on a larger screen.

4. **Specialized Glasses:** Some optical aids come in the form of specialized glasses, such as prism glasses, tinted glasses, or filtered glasses, which help individuals with specific visual impairments to address their unique needs.

5. **Video Magnifiers:** Video magnifiers, also known as electronic magnifiers or digital magnifiers, use a camera and a screen to magnify and display text or images. These aids provide adjustable magnification levels, color contrasts, and other features to assist individuals with low vision.

In summary, non-optical aids focus on compensating for visual impairments through alternative sensory channels, while optical aids utilize optical technology to enhance the remaining vision of individuals with visual impairments. Both types of aids play a crucial role in facilitating independence, accessibility, and participation for individuals with visual disabilities.

non optic aids are like braile which are not wore such as spectacles (optic aids)