The invention provides a vision dynamic detection and early warning method, and is applied to a vision detection device, the vision detection device is connected to
the Internet of Things, and the method comprises the following steps: starting the vision detection device, detecting environmental conditions, detecting man-
machine distance, and displaying vision marks on a display screen according to a conversion proportion; a user inputs a
remote control value through the remote controller, and the vision detection device judges the accuracy according to the input
remote control value; the size of the vision mark icon is changed according to the accuracy of the
remote control value; after vision detection is finished, a detection numerical value is calculated and stored according to a vision detection
standard distance formula, and then a data statistics interface is entered; recent vision detection values are counted, an oscillogram is drawn, and changes of the vision values and historical data are judged to give an early warning; compared with the prior art, the method has the advantages that the constraint of fixed-
distance detection can be broken through, the application range of vision detection is widened, and the early warning effect of early warning in time and early warning for preventing unhappened myopia can be achieved through long-term detection tracking and vision change
trend analysis.