Скачать или смотреть Eye protection and precautions in Telugu (for class 9)

In my channel Ashalatha Kothapalli I am adding a video on Eye problems, remedies and protection of eyes.
The first slide is about problems in the eye like conjunctivitis, night blindness,Xerophthalmia cataract,Glaucoma and eyesight issues.
The next slide is about myopia and treatment. In Myopia the focal point is before the retina. So they can’t see. To catch the image on the retina the object should move two wards the eye. To correct this error concave lenses will be used.
The next slide is about long sight or Hyperopia and hypermetropia. In these people the focal point will be beyond the retina. To get the image object will be moved far from the eye. To correct this error a convex lens will be used.
The next slide is about Astigmatism. The curvature of the Cornea and lens are not the same. So focal points are more than one. So the image will be blurry or a double image. To correct this error cylindrical lens will be used.
Last slide is about what are the measures to be taken to protect our eyes