ABO EXAM PRE-TEST WITH ALL CORRECT ANSWERS

150 mm 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 What is the focal length of a 2 diopter lens? A. 500 cm B. 39.37 inches C. 500 mm D. 2 meters 00:02 01:39 Nanometers Wavelengths are measured in A. Meters B. Decimeters C. Centimeters D. Nanometers UVC Which of the following has the shortest and therefore most harmful wavelength? A. UVC B. UVB C. UVA D. INFRARED Compound one another When two light wavesw are in "in phase" they will A. Destroy on another B. Reduce each front by half C. Compound one another D. None of the above Plus or minus 3 degrees The cylinder axis tolerance for a 1.00D cylinder according to ANSI Z80.1 is A. Plus or minus 7 degrees B. Plus or minus 5 degrees C. Plus or minus 3 degrees D. Plus or minus 2 degrees Thicker temporally A plus lens decentered "out" will result in a finished lens which is A. Balanced B. Thicker temporally C. Thicker nasally D. Uniform in edge thickness Thicker nasally A minus lens decentered "out" will result in a finished lens which is A. Balanced B. Thicker temporally C. Thicker nasally D. Uniform in edge thickness 8% An uncoated normal plastic lens will reflect approximately ______% of light. A. 2% B. 4% C. 8% D. 12% Biconcave A lens having a minus curve on both front and back is called A. Toric B. Meniscus C. Biconvex D. Biconcave 50% Give the RX +1.00 +1.00 x 45, how much of the +1.00 cylinder is in the effect at axis 90? A. 100% B. 70% C. 50% D. 0 97% if its power 80 degrees from the specified axis, a cylinder will show A. 5% of its power B. 10% of its power C. 50% of its power D. 97% of its power