ABO Lensometer 13 question with correct solution

ABO Lensometer 13 question with correct solutionAnother name for the lens meter is: - correct answer Focimeter When looking through the eyepiece of the lens meter the 3 thinly spaces lines represent: - correct answer Sphere power When looking through the eyepiece of the lens meter the 3 widely spaces lines represent: - correct answer Cylinder Power When looking through the eyepiece of the lens meter, when the 3 closely spaced lines and 3 widely spaced lines do not come into focus at the same time the lens is - correct answer Spheroclyinderical When looking through the eyepiece of the lensometer when the 3 closely lines and 3 wide lines come into focus at the same time, the lens is: - correct answer Spherical lens How many steps is a diopter broken down into? - correct answer 8 When the 3 closely spaces lines are clear at -3.00D and the 3 widely spaces lines are clear at -4.00D, how much astigmatism is found in the lens? - correct answer -1.00D When the 3 closely spaces lines are clear at +2.50D and the 3 widely spaces lines are clear at +1.00D, how much astigmatism is found in the lens? - correct answer -1.50D When the 3 closely spaces lines are clear at +1.00D and the 3 widely spaces lines are clear at -2.25D, how much astigmatism is found in the lens? - correct answer -3.25D When the 3 closely spaces lines are clear at -2.25D in the upper portion of a bifocal and the 3 widely spaces lines are clear at -0.25D in the bottom portion of a bifocal, how much reading addition is present? - correct answer +2.00D Eyepiece - correct answer the part of the lensometer that the user looks through Prism dial - correct answer used to measure prism The marking device - correct answer the ink dotting mechanism used to mark the optical centers Lens holder - correct answer The spring loaded arm that holds the lens securely in place Lens table - correct answer the adjustable straight metal shelf where the frame rests to make sure the axis reading is correct The power wheel or power drum - correct answer the large wheel used to find the power of the lens and is marked with powers from -20 to +20