ANSI Standards Exam Questions and Answers

ANSI Standards Exam Questions and Answers sphere tolerance for single vision and segmented multifocals 0.00 to +/-6.50 D -ANSWER +/- 0.13D sphere tolerance for single vision or segmented multifocals greater than +/- 6.50 D -ANSWER +/- 2% cylinder tolerance for single vision or segmented multifocals greater than or equal 0.00D and less than or equal to 2.00D -ANSWER +/- 0.13 D cylinder tolerance for single vision or segmented multifocals greater than 2.00 D and less than or equal to 4.50 D -ANSWER +/-0.15 D cylinder tolerance for single vision or segmented multifocals greater than 4.50 D -ANSWER +/- 4% sphere tolerance for progressive addition lenses from 0.00 to +/- 8.00 D -ANSWER +/- 0.16 D sphere tolerance for progressive addition lenses above +/- 8.00 D -ANSWER +/- 2% cylinder tolerance for progressive addition lenses greater than or equal to zero and less than or equal to 2.00D -ANSWER +/- 0.16 cylinder tolerance for progressive addition lenses 2.00 D and less than or equal to 3.50 D -ANSWER +/- 0.18 cylinder tolerance for progressive addition lenses 3.50 -ANSWER +/ 5% tolerance for cylinder axis up to and including 0.25D (0.25) -ANSWER +/-14 tolerance for cylinder axis for 0.25 up to and including 0.50 (0.50) -ANSWER +/-7 tolerance for cylinder axis 0.50 and up to and including 0.75 (0.75) -ANSWER +/-5 tolerance for cylinder axis greater than 0.75 up to and including 1.50 (1.00, 1.25. 1.50) -ANSWER +/-3 tolerance for cylinder axis for power of 1.75 and greater -ANSWER +/-2