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Ch 2 Sec 3: Presbyopia, Multifocals, Progressive Lenses Questions With Complete Solutions
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Ch 2 Sec 3: Presbyopia, Multifocals, Progressive Lenses Questions With Complete Solutions According to US Census data projected to 2050, which is the only age group that will show an increase in number? 55+ What percentage of the current US population over the age of 55 needs eyewear? 84% ...

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  • November 13, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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Ch 2 Sec 3: Presbyopia, Multifocals,
Progressive Lenses Questions With Complete
Solutions

According to US Census data projected to 2050, which is the only age group that will show an

increase in number? 55+




What percentage of the current US population over the age of 55 needs eyewear? 84%




As a practicing optician, your role with presbyopic patients will be to determine their lifestyle

needs and wants in order to ____________. match product features and benefits to them




What was the earliest form of presbyopic lens correction? Single vision lenses




Who is attributed with the concept of correcting presbyopia with bifocals? Benjamin

Franklin




What was the design of the first bifocal lenses? Two differently powered lens halves

secured in the same eye wire

, Ch 2 Sec 3: Presbyopia, Multifocals,
Progressive Lenses Questions With Complete
Solutions
What was a problem associated with August Morck's cemented bifocal lenses? The

difference indices between the distance lens and the wafer lens caused color aberration for the

wearer




Which glass bifocal lens design was the first to use a fusing process? The Kryptok




Which bifocal lens exhibited color aberration for the wearer through the segment? The

Kryptok




When was the first trifocal lens developed? 1936




What is the furthest and closest a person will be able to see if he is looking through a plano

distance, +2.50 add multifocal and has 4.00D of accommodative amplitude? 40cm to

15.4cm




For a specified distance Rx power, what happens to the ranges of clear vision through a

segmented multifocal as add powers get high? The zones shrink

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