Can Lin eye protection pen improve eyesight? Is it a high-tech product?

Lin's posture pen can't improve his eyesight. It can correct the user's writing posture, thus reducing the probability of myopia. It uses the infrared detection system at the top of the pen to detect whether the user's head is too low. When the infrared ray detects that the user's head is too low, its pen tip will retract and it is impossible to write. When the infrared ray detects that the user's head is at a normal height, its pen tip will stretch out and it can write normally.