Testing Lens Test Chart Download

Ian Grey all galleries Galleries Lens Sharpness Tests Downloadable Lens Test Chart II previous next: 29-DEC-2005: Downloadable Lens Test Chart II. Download this 300ppi, 12'x18' test target. Undertale game files download. File size is 1.2mb. Make sure to download the 'original' file size. You can download printable test charts by right-clicking on the thumbnails below. The bitmap chart, which is included in the samples folder of the Imatest installation, has pixel levels 47 and 255, has a contrast ratio of (255/47) 2.2 = 41 when printed at gamma = 2.2 (the normal setting). Lens Testing Chart. Right click to download the photo/file, and follow the directions here. Back to USAF Lens Testing. Back to Basic Lens Testing. November 20, 2000.

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Testing Lens Test Chart Download Free

Searching for a free eye chart to check your vision at home?

Simply click on the image to the right, and your download will begin. You can use this eye chart to check your entire family's vision.

Remember: This is not a substitute for a complete medical eye exam by a licensed optometrist. But it could help you identify potential vision problems that demand professional attention.

Need the JPEG version? Click here.

How to Use the Eye Chart

Print the free eye chart on regular 8 1/2 x 11-inch paper
Tack or tape the chart to a windowless wall in a well-lit room at eye level
Measure ten feet from the wall
Cover one eye (if you wear glasses for distance vision, keep them on)
Have another person point to each line as you read the letters out loud and keep track of which letters you get right
Continue to the bottom row or until you can no longer read the letters
Write down the number of the smallest line where you identified the majority of letters correctly (Ex. If you were able to read 5 out of 8 letters on line 8, you would write 20/20.)
Cover the other eye and repeat steps 5-7

What Do the Results Mean?

That depends on the age of the person being tested. A 3- to 4-year-old should be able to read the 20/40 line, and a 5-year-old the 20/30 line. Older children and adults should be able to read the majority of letters on the 20/20 line.

If you notice any results that fall outside these standards, be sure to schedule an eye exam with your Vision Source doctor.

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Testing Lens Test Chart Download

Patients