LIGHT-POST 12

CLASS 8 CHAPTER 16

Light
Day 12

Dear Learners,

In the previous blog, we have learned about way to keep  our eyes healthy. Let me help you to recall few important points

1. There are certain do's and don't we need to follow to keep our eyes healthy.
2. Vitamin A is very important to keep our eyes healthy. 

Today, we will be learning about the challenges faced by Visually impaired. We will also discuss about The Braille System.

Happy Learning!😊

At the end of it, you will be able to:

1. empathize with visually challenged people

2. tell the reasons for visual impairments.

3. tell the cure of visual impairment.

4. explain the script used by visual impaired. 

HOW DO VISUALLY CHALLENGED CAN READ OR WRITE? THE BRAILLE SYSTEM

Visually challenged people cannot see. visual impairment can be curable and incurable.
In  curable impairment, either the cornea or the eye lens become opaque.

(i) The opaque cornea can be surgically replaced by a healthy donated cornea.

https://www.youtube.com/watch?v=EW5FsSSOe2Y

There are various non-profit organisation who work for donation of cornea. Aishwarya Rai is supporting the eye donation movement.Any person or organization can become a member of Eye Bank Association of India and help strengthen the eye donation movement.

(ii) The opaque eye lens is surgically replaced by an artificial lens. 

THE BRAILLE SYSTEM

                 https://www.youtube.com/watch?v=R0cbckyD9Q0

In the case of permanent impairment, the image formed on the retina cannot be transmitted to the brain. Such people develop sensitivity towards sound and touch. Thus, visually challenged people use other senses to 'see' the world around.

Louis Braille developed this method so that visually impaired people could read using the sense of touch. This method called Braille, involve the use of special symbols  representing the alphabet and their combinations.

            https://www.youtube.com/watch?v=8hzPIKmCHUA

In this method, the text is printed on a thick sheet of paper using special symbols. These symbols consist of up to six dots two vertical rows of three dot each in a rectangular array. The dots are embossed and raised slightly above the surface of the paper.

Braille Cell- A rectangular array of raised dot is called Braille Cell.

A visually challenged person recognizes each letter by the position of dots in each cell.

Story of Louis Braille :     https://www.youtube.com/watch?v=o9BOQ6IpTSE

For more information about Louis Braille:  

https://braillebug.org/louis_braille_bio.asp

Home Assignment

1. Read page no 260-261 of your reader.

2. Do oral question on page 261.