NACOR CERTIFICATION EVALUATION
FULL QUESTIONS AND SOLUTIONS
VERIFIED PREPARATION MATERIAL
●● What is the B or Depth of the frame?
Answer: Vertical Measurement
●● What is the Bridge Size?
Answer: DBL
●● What is the formula for the distance between centers?
Answer: A + DBL
●● What is the formula for the effective diameter
Answer: 2x the longest radius
●● What is the formula for Lens/frame difference
Answer: A - B
●● What is the formula for Binocular Decentration Per Lens
Answer: ((DBC-Wearers PD)/2)
FULL QUESTIONS AND SOLUTIONS
VERIFIED PREPARATION MATERIAL
●● What is the B or Depth of the frame?
Answer: Vertical Measurement
●● What is the Bridge Size?
Answer: DBL
●● What is the formula for the distance between centers?
Answer: A + DBL
●● What is the formula for the effective diameter
Answer: 2x the longest radius
●● What is the formula for Lens/frame difference
Answer: A - B
●● What is the formula for Binocular Decentration Per Lens
Answer: ((DBC-Wearers PD)/2)