You are using the lensometer to read the power in a lens in which the three sphere lines become clear with the power drum reading +1.25 and with the axis wheel reading at 138. Moving the power wheel, the three-cylinder lines come clear at a power drum reading of -4.00. Which of the following would be the correct prescription from this lens? Select one: +1.25 -5.25 x 138 -4.00 +1.25 x 138 +1.25 -4.00 x 138 -5.25 +1.25 x 138
