The mouse ball or wheel is dirty
Small sundries such as dust and dander are accumulated on the mouse ball or roller, which will greatly reduce its flexibility. Just flip the mouse gently to clean up the sundries on the ball, or take out the roller to clean up the dirt, and you can recover as before.
The optical mouse lens path is not clean.
Working on the desktop for a long time, the lens channel of the photoelectric mouse will inevitably be contaminated with dirt, which will lead to the light not reaching smoothly. Gently wipe the surface of LED, lens, reflector and photosensitive tube with cotton ball dipped in alcohol. It will immediately become as bright as new, and the mouse will become sensitive.
The mouse is aging.
The aging of the light-emitting tube or photosensitive element of the mouse may be because some manufacturers have adopted unqualified accessories in order to reduce costs. But don't worry, the price of optical mouse is also very close to the people, and it is also a good choice to change it.
Optical path shielding of optical mouse is not good.
The pointer of the photoelectric mouse may drift or be inaccurate, mainly because some mice are not well shielded in the light path in pursuit of fashionable and beautiful transparent modeling. This problem can be avoided by paying attention to the transparency of the product shell when buying.