The following questions relate to reduced schematic eye. 
  a. The following diagram represents the reduced schematic eye.
    Write down the values for:

     a ( in mm )
     b ( in mm )
     c ( in mm )
     the total eye power
     the refractive index of the eye

b. A 20 cm object is 1 metre away from the eye. What is the image size on the retina?