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2. Snellen chart - Wikipedia

   en.wikipedia.org/wiki/Snellen_chart

   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 developed by his professor Franciscus Cornelius Donders .

3. File:ETDRS Chart R.svg - Wikipedia

   en.wikipedia.org/wiki/File:ETDRS_Chart_R.svg

   English: ETDRS Chart R, one of the three logMAR chart models designed by Ferris, Kassoff, Bresnick, and Bailey for use in the Early Treatment Diabetic Retinopathy Study (ETDRS). Chart and optotype dimensions in millimeters precisely as specified by Ferris et al. (1982). LogMAR and VAR values after Baliey & Lovie (2013).

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. Eye chart - Wikipedia

   en.wikipedia.org/wiki/Eye_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 .

6. 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 ...

7. File:Snellen chart.svg - Wikipedia

   en.wikipedia.org/wiki/File:Snellen_chart.svg

   When printed out at this size, the E on line one will be 88.7 mm tall and when viewed at a distance of 20 ft, you can estimate your eyesight based on the smallest line you can read.}} |Source=Own work by uploader, Based

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Amsler grid - Wikipedia

   en.wikipedia.org/wiki/Amsler_grid

   Ask to cover one eye with hand or occluder and look directly at the center black dot. While looking directly at the center dot, and observe the grid whether patient can see all corners and sides of grid. If any lines or areas look blurry, wavy, dark or blank mark that area in chart and consult ophthalmologist. Follow the same steps with the ...