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2. Snellen chart - Wikipedia

   en.wikipedia.org/wiki/Snellen_chart

   Snellen chart. Purpose. Snellen chart is used to estimate visual acuity (last three rows are 20/15, 20/13 and 20/10) A Snellen chart is an eye chart that can be used to measure visual acuity. Snellen charts are named after the Dutch ophthalmologist Herman Snellen who developed the chart in 1862 as a measurement tool for the acuity formula ...

3. Eye chart - Wikipedia

   en.wikipedia.org/wiki/Eye_chart

   Landolt C. Lea test. logMAR chart. An eye chart is a chart used to measure visual acuity comprising lines of optotypes in ranges of sizes. Optotypes are the letters or symbols shown on an eye chart. [ 1] Eye charts are often used by health care professionals, such as optometrists, physicians and nurses, to screen persons for vision impairment.

4. LogMAR chart - Wikipedia

   en.wikipedia.org/wiki/LogMAR_chart

   The chart was designed by Ian Bailey [5] and Jan E. Lovie-Kitchin at the National Vision Research Institute of Australia. [1] [3] They described their motivation for designing the LogMAR chart as follows: "We have designed a series of near vision charts in which the typeface, size progression, size range, number of words per row and spacings were chosen in an endeavour to achieve a ...

5. Sports and activities that improve hand-eye ... - AOL

   www.aol.com/sports-activities-improve-hand-eye...

   When you’re not up to getting too physical, there are other ways to give your hand-eye coordination a boost. Here are some options: Bouncing a ball. Playing catch. Playing video games. Learning ...

6. From grief to good: How maker spaces help family honor child ...

   www.aol.com/grief-good-maker-spaces-help...

   Mister Rogers and maker spaces. A maker space s a dedicated place for collaboration, learning and discovery, according to makerspaces.com, often inside a school or library.They can be equipped ...

7. Lea test - Wikipedia

   en.wikipedia.org/wiki/Lea_test

   The "LEA Numbers Test" was the second of the LEA tests that was developed and can be used to test the visual acuity of older children and even adults. This test has a layout similar to a typical Snellen chart, with lines of numbers decreasing in size towards the bottom of the page. Like the optotypes of the LEA Symbols Test, these numbers are ...

8. Sloan letters - Wikipedia

   en.wikipedia.org/wiki/Sloan_letters

   Sloan letters, designed by Louise Sloan in 1959, are a set of optotypes used to test visual acuity generally used in Snellen charts and logMAR charts. This set of optotypes consists of ten specially formed "letters", C, D, H, K, N, O, R, S, V and Z. [1] These letters, unlike the ones used in older Snellen charts, are designed to give acuity ...

9. Pythagoreanism - Wikipedia

   en.wikipedia.org/wiki/Pythagoreanism

   Pythagorean tuning is a system of musical tuning in which the frequency ratios of all intervals are based on the ratio 3:2. [ 38] This ratio, also known as the "pure" perfect fifth, is chosen because it is one of the most consonant and easiest to tune by ear and because of importance attributed to the integer 3.