79.  ssm A person has far points of 5.0 m from the right eye and 6.5 m from the left eye. Write a prescription for the refractive power of each corrective contact lens.

 

So we want the person to see objects that are far away.  That means the object distance is essentially infinity.  The image distances will be the far points, but negative because they should be virtual images.  Because they are contact lenses and therefore right on eyes, we do not adjust the distances for spacing between lens and eye.

 

 

Now Power is

 

For right eye

 

For left eye

 

 

 

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This page last updated on July 7, 2018