Some optometrists are not professional and meticulous enough. After inquiring about the customer's original prescription glasses, they pretended to use an optometry instrument for optometry and manually inserted lenses for optometry, and then told you that the glasses' diopter remained good, only increasing by 25 or 50 degrees. So the best way is to have an optometrist perform optometry first, wait for the results to be available, and then compare them with their original glasses. Alternatively, choose two different glasses stores for optometry, and choose a professional one for comparison.

If you go for optometry next time, follow this process to ensure that the degree is accurate! First, measure the current degree of the prescription glasses and make sure to have the optometrist write it down by hand, including detailed degree and pupil distance. The computer optometry instrument is used for optometry, and the computer optometry data sheet must be saved. Insert method for optometry and record data (this step is very, very important). According to the insertion method data, try it on for no less than 15 minutes (it is very important, not doing this will directly affect comfort). After adjusting according to the trial wear effect, provide a complete optometry sheet (including left and right eye power, pupil distance, and astigmatism data such as astigmatism power and axial direction).

Pay attention to performing binocular balance and adjustment tests where conditions permit. Failure to perform double-eye balance and adjustment tests will result in easy fatigue or prolonged adaptation time, which can cause eye damage in severe cases.

If the optometrist fails to follow the above process, it can be concluded that the optometrist is not responsible and there may be various issues with the data provided.