find the powere of the upper and lower halves of bifocals design to correct the vision...

find the powere of the upper and lower halves of bifocals design to correct the vision of a 50-year-old nearsighted man who has a near point of 25 cm and a far point of 50 cm

1.) What is the powere of each lens?

2.) What is the person's uncorrected range of clear vision?

Solutions

Expert Solution

1.) Power of upper part is - 2 D and power of lower part is zero.

2.) Person's uncorrected range of clear vision is 25 cm

Since he can not see clearly beyond 50 cm hence Range of his clear vision is 50 - 25 = 25 cm

genius_generous answered 2 years ago

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