We often refer to "20/20" vision but what does it actually mean? 20/20 is a term used to express normal visual acuity measured at a distance of 20 feet or 6 metres (6/6 vision). If you have 20/20 vision, you can see clearly at 20 feet what a person with normal vision can see from 20 feet.

If you have 20/20 vision, you can see clearly at 20 feet what a person with normal vision can see from 20 feet.

However, if you have 20/60 vision, it means that a person must be as close as 20 feet to see what a person with normal vision can see from 60 feet.

A person is considered blind if their vision is 20/200 meaning that they can see something 20 feet away that a person with normal vision can see from 200 feet away.

It can also work in reverse, if a person has 20/10 vision it means that they can see something from 20 feet away that a normal person can see from only 10 feet away. They have bionic eyes!

Does 20/20 vision mean you have perfect vision?

20/20 vision only refers to the sharpness or clarity of vision at a distance. There are other critical vision skills, including peripheral vision, eye coordination, depth perception, ability  to focus and ability to see colour, that contribute to your overall vision.

It’s important to get your eyes examined by an eye care professional on a regular basis to check all aspects of your vision health.

What is 20/20 Vision Infographic

Sight Stories and News

  • Eye Care Training in Nepal - Creating Sustainable Programs

    "I, (Dr. Marty Spencer, Seva Canada Board Member), just returned from a trip to Nepal for Seva Canada. I have been making these trips to many of the countries that Seva operates in since the 80’s. Like snowflakes, they’re never alike, even though I have been to Nepal about 15 times. I go to teach, but almost always learn even more." Read our blog to learn about Dr. Spencer's trip and how you are helping to create sustainable eye care programs by training locals to care for their own communities.

    Blog | March 28th, 2020
  • How Seva Canada's Program Partners Are Doing During COVID -19

    Most medical personnel working with Seva Canada are now focused on providing support to their local hospitals and clinics in any way they can. Hospital beds and equipment are being reallocated to provide medical care to those in greater need. They are practicing ‘Seva’ – selfless service.

    Blog | March 28th, 2020
  • The Doctor Who Helped Defeat Smallpox Explains What's Coming

    Epidemiologist and Seva Co-Founder, Larry Brilliant, who warned of pandemic in 2006, says we can beat the novel coronavirus—but first, we need lots more testing...14 years ago, Brilliant, the epidemiologist who helped eradicate smallpox, spoke to a TED audience and described what the next pandemic would look like.

    Blog | March 20th, 2020