ABO-NCLE practical Exam questions with correct answers

ABO-NCLE practical Exam questions with correct answers
Question :Single Vision
Correct answer:corrects for one distance
Question :Multifocal
Correct answer:Corrects with two or more prescriptions (or
'powers')
Question :Bifocal
Correct answer:lens having two focus strengths
Question :Trifocal
Correct answer:pertaining to having three focus strengths
Question :Calculating Prismatic Effects
Correct answer:obtained at the center of an optical lens by
producing a difference in edge thickness, either by grinding
the back surface at an angle to the front surface during lens 

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