Uncorrected Visual Acuity: After inspection, cover one eye and fix the other on the screen ahead. Use the right hand to push the joystick in the direction of the symbol E shown on the screen. The system automatically displays the symbol E in compliance with the rules, judges the test subject's uncorrected visual acuity, and automatically collects the data into the database.

Cyclopegic Vision Test: After registration, cover one eye, look straight ahead at the screen with the other, and push the joystick with the right hand in the direction indicated by the symbol E on the screen. The system automatically displays the symbol E according to the rules, automatically judges the裸眼vision of the test subject, and automatically aggregates the data into the database.

Chain Mirror Test: Move a chain of mirrors up and down. The test is complete when the direction of the E symbol opposite the chain of mirrors is clearly visible. The test result is automatically displayed on the test host.