ABO Lensometer 13 Questions with Correct Solutions Rated A+

Another name for the lens meter is: - Focimeter When looking through the eyepiece of the lens meter the 3 thinly spaces lines represent: - Sphere power When looking through the eyepiece of the lens meter the 3 widely spaces lines represent: - 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 - 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: - Spherical lens How many steps is a diopter broken down into? - 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? - -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? - -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? - -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? - +2.00D Eyepiece - the part of the lensometer that the user looks through Prism dial - used to measure prism The marking device - the ink dotting mechanism used to mark the optical centers Lens holder - The spring loaded arm that holds the lens securely in place Lens table - the adjustable straight metal shelf where the frame rests to make sure the axis reading is correct The power wheel or power drum - the large wheel used to find the power of the lens and is marked with powers from -20 to +20 The black number on the power wheel represent - plus powers The red numbers on the power wheel represent - minus powers The elevation lever - Changes the angle of the lensometer Axis wheel - the large wheel marked 0° to 180° used to find the axis location on the lens