Abo advance exam - Study guides, Class notes & Summaries

The amount of reflection of each surface of cr-39 lenses is approximately? A. 2% B. 4% C. 6% D. 8% - 4% The absorption of light in lenses is classified by two variables. What are they? A. Base curve and thickness B. Index of refraction and thickness C. Thickness and lens transmission D. Tint, and lens transmission - C. Thickness and len transmission The denser the tint in a lens____ A. The greater transmission of light through the lens B. The greater internal reflections in th...

ABO Advance EXAM PRE-TEST Questions with correct Answers!!! 100% Verified RATED A++ 150 mm - ANS When ordering a six inch temple, its corresponding millimeter value is which of the following? A. 135 mm B. 140 mm C. 145 mm D. 150 mm 500 mm - ANS What is the focal length of a 2 diopter lens? A. 500 cm B. 39.37 inches C. 500 mm D. 2 meters Nanometers - ANS Wavelengths are measured in A. Meters B. Decimeters C. Centimeters D. Nanometers UVC - ANS Which of the follo...

ABO advance study guide exam questions & answers When taking seg height measurements, which of the following situations could result in a parallax error? - ANSWER-Patient sitting/ dispenser standing erect Which of the following is not significant in identifying the problem of vertical imbalance? - ANSWER-Patient's age Which of the following elements is NOT critical when determining vertical imbalance? - ANSWER-Lens power in the 180 degree meridian A prism will displace the object be...

a pair of eye with a distance P.D. =68mm, converge for a reading an average of about - 3 to 4 mm if the pupillary distance is measured while the patient is focusing on a point 30 inches in front of the eyes, the P.D. measured is known as the - intermediate P.D. the instrument that opticians commonly use to measure the vertex distance is called a - distometer if the long edge of an adjustable nose pad digs into a persons nose, which angle should be altered? - splay when us...