Combined adjustable myopia prevention device

The utility model discloses an assembled adjustable device of prevention of myopia and it belongs to the technological domain of health care equipment. It is consisted of a pedestal fixing on desk edge and T-typed apparatus inserting in a bearing casing pipe of the pedestal. The fixed desk bolt of the pedestal can be on or under the desk. The T-typed apparatus can be inclined a certain angle frontward or backward. T-typed bracket at upper part of the T-typed apparatus can be moved upward or downward. When a writer is seated with acuurate position, the T-typed bracket is at lower part of the chin of the writer in order to keep the writer's accurate seating position. The device has simple structure. It is applicable for different kinds of desks and it is available for users with different heights and different bodily forms. It can be used safely and easy for installation and disassembly.