Nowadays, when we take our children to the optician for glasses, the optician usually does computer optometry for children, and then many parents know little about computer optometry. In fact, computer optometry is not very accurate. When we talk about matching children’s glasses, don’t trust “three minute computer optometry”!
Computer optometry is not the only basis for matching
Computer optometry first appeared in the 1970s, because of its rapid, simple optometry, welcomed by practitioners. In people’s concept, the computer optometry should be more accurate, but in practice, there are often deviations, mainly for two reasons.
From the perspective of the subject, sitting in front of the optometer for optometry, the instrument completes the whole process of operation in an instant, and the subject is easy to generate tension, resulting in an instant increase in the number of eyes. It’s like taking pictures with a camera. Some people are very nervous, especially when they press the shutter. In this way, the result will definitely be different from the actual degree.
From the point of view of the instrument itself, the difference of quality and stability and the length of using time of the machine also affect the accuracy of optometry to a certain extent.
The main errors caused by computer optometry are the high degree of myopia, the low degree of hyperopia, and the inaccurate astigmatism axis. Therefore, the results of computer optometry can only be used for clinical reference, not directly as a prescription for matching glasses. At present, no matter what kind of advanced computer optometry, it does not have the accuracy of artificial optometry.
It can be seen that the computer optometry can not be the only basis for matching glasses. Parents should be careful when taking their children to the glasses shop. If you want to know more about the knowledge of preventing electric shock at home, this website has a lot of relevant knowledge for you to find. I hope it can help you