A vision test is a procedure used to assess a person's eyesight and detect any vision problems. It typically involves reading letters or symbols from a chart, known as the Snellen chart, at a specific distance. The results help determine the clarity of vision and whether corrective lenses, such as glasses or contact lenses, are needed. Vision tests can also include other assessments, such as checking peripheral vision and color perception. These tests are important for maintaining eye health and can help identify conditions like myopia (nearsightedness) or hyperopia (farsightedness). Regular vision tests are recommended for people of all ages.