It is essential for you to be able to see clearly. Have you ever wondered if you know what entails the best vision? There are a number of things that ophthalmologists look at so that they determine how perfect your vision is. You are recommended to see an eye doctor on a regular basis. In this article, you are going to learn more about 20/20 vision.
20/20 vision means that a person is able to see what an average person can see when standing 20 feet away from an eye chart. You should be aware of the fact that the sharpness of your vision is checked by an eye chart. The number that is at the top of the eye chart refers to the distance between you and the eye chart. You will be able to know the distance that an average individual needs so that they read the line you are reading without straining looking below the eye chart. It is essential for you to understand that letters above the 20/20 line get bigger since they show bad visual acuity. Your visual acuity is better if you can read letters on lines that are below 20/20, for example, 20/15. This clearly shows that 20/20 is not the perfect vision a person can have.
It is vital for you to understand the difference between eyesight, vision, and visual acuity. The term eyesight is used to mean view. Vision is a broader term that refers to various visual skills and visual abilities. It is true that visual acuity is how sharp your vision is. A person’s visual acuity is determined by several factors. Understanding visual acuity measurement is vital.
Most eyeglasses for correcting poor vision are meant to bring your visual acuity to 20/20. Very few adults have 20/20 vision. People with above 20/40 vision are the only ones that are allowed to drive in most countries. If your vision is 20/200 and worse, you are a blind person. It is recommended that your child goes for eye testing when they reach an age that they can cooperate with an eye doctor for visual acuity testing. You need to know that kids at the age of eight or nine will lose their vision when they attain ages eight or ages nine after which their visual acuity is stable until they reach ages sixty and above. There are times when a person with 20/20 vision has vision that is not sharp enough due to HOAs condition.