NEAR VISION ACUITYThe ability to clearly see, inspect, identify, and understand objects at near distances, within arm’s length. DISTANCE ACUITYThe ability to clearly see, inspect, identify and understand objects at a distance. People with 20/20 distance sight may still have visual problems. ...
This visual acuity test is a critical part of identifying signs of vision problems. For example, it can detect refractive errors, more commonly known as farsightedness and nearsightedness.Hyperopia(farsightedness) occurs when you have sharp far-range vision while your close-range vision is less...
What is visual acuity? Visual acuity refers to the clarity or clearness of the vision, a measure of how well a person sees.
What is Visual Acuity? What is Nearsightedness? What is Astigmatism? What is Myopia? Discussion Comments By anon266241 — On May 04, 2012 How much would you pay to see the missing color? By the way, I'm red-green colorblind and it ticks me off that there is a rich red color I ...
First, they’ll test your unassisted visual acuity by having you read lines from a Snellen chart—that’s the big poster with rows of letters and numbers that get smaller as they go down the page. They’ll also have you look through a tool called a phoropter, which is fitted with sever...
What is focal vision?Question:What is focal vision?The Human Visual SystemNormally, people don't give much thought to how their vision works. Therefore, it may come as a surprise that the human visual system actually is made up of two main parts. Focal vision is one of those main parts...
visual acuity test. This is the test most people are familiar with and it involves covering each eye and reading a charge with letters and shapes. The test measures a person's distance visual ability, so his or her doctor can diagnose common vision problems, such as near- and far-sighted...
What is the outer layer of the eye called? What structure of the eye accommodates for near vision? What is the function of the pupil? What structure of the eye precisely focuses light on the retina? In the eye, what provides color vision? What is the white outer layer of the eye call...
Bilateral myopia is nearsightedness that affects both eyes. Learn more about myopia, including the symptoms and how it can be corrected.
Vision Type: What the Numbers Mean 20/20 - According to the American Optometric Association, this is normal visual acuity (clarity and sharpness) at a distance of 20 feet. That means you can see clearly 20 feet away from an object. 20/100 - This is just an example, but those who have...