Computerized optometry as one of the most commonly used optometry methods, this result is still more accurate, but because it is machine tested, there must be different degrees of error. In addition to optometry, the prescription of eyeglasses should be tested by inserting lenses. Only after the test of inserting lenses to improve the corrected visual acuity to 1.0, can we accurately understand whether the eyes have astigmatism and the degree of astigmatism. This part of the work must be in the regular hospital, by the professional dispensing personnel detailed examination, must not simply rely on the results of computer optometry for glasses, computer optometry results can only be used as a reference, the final degree must be inserted after the lens can be accurately understood. If there is astigmatism in your eyes, you must go to a regular hospital for examination.