To shut and open one eye quickly?

To shut and open one eye quickly, follow these steps:

1. Focus your eyes on a specific object. This will help you to keep your eyes coordinated and moving in the same direction.

2. Close your right eye. Do this by gently squeezing your eyelid closed.

3. Open your right eye. Do this by gently releasing your eyelid.

4. Repeat steps 2 and 3 with your left eye.

You may need to practice this technique a few times before you can do it quickly and smoothly. With practice, you should be able to shut and open one eye quickly and easily.