For more information about eye conditions, special tests and general eye health, visit the American Academy of Ophthalmology website.
A visual acuity test looks to see how sharp your vision is and compares to the average person.
Since you will be putting your hands near your face, it’s a good idea to wash your hands before you start.
Remember, tests like this can be useful to assessing the sharpness of your vision (or ‘visual acuity’) but they cannot determine if you have an eye disease like glaucoma or problems with the retina. Only an eye care professional can do that. Learn more about eye healthcare professionals here.