Question

please answer me fasterr

Answer 1

hey Mate this is your Answer

Answer 2

Hey dear,
I assume you want to know just refractive defects here.

◆ Hypermetropia -
- In this type of refractive error person is unable to see farther.
- Image in formed behind of retina here.
- Optical correction is with convex lens.

◆ Myopia -
- In this type of refractive error person is unable to read near distance.
- Image in formed in front of retina here.
- Optical correction is with concave lens.

◆ Astigmatism-
- In this type of refractive error, light rays are focused at different meridia in eye
- Corrected by cylindrical lens.

Hope this helps you...