By clicking here, you may return to the Resources Page.

This page contains two downloadable and printable vision tests,
and one test to be done on the computer monitor without printing.
 

Vision Tests Include:

Distance Vision Test (E-Game)

Amsler Grid (monitors distortion in central vision)

Test for Color Blindness

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Distance Vision Test - Printable

This is a test of the distance visual acuity using the "E Game." This test can be performed by adults as well as children. Below are instructions on how to print and administer the test. While this vision test is felt to be accurate, it does not substitute for vision tests given by a health care professional or eye care professional. Due to differences in monitor size and resolution, this test is not accurate when read from a computer monitor or television. Also, due to differences in printer resolution and setup, there can be variations in the appearance of the test. Included is a calibration bar that can be measured to determine that the letters are of the correct size.

VIEW and PRINT the Distance Vision Test. See second page for instructions.

When printing, the following settings should be used in the printer setup, as available:
The page should be centered vertically and horizontally.
The size of the image should be kept the same, not enlarged to fill the page.
Print as portrait, not landscape.
The graphics type should be monochrome (black and white), and print resolution set to "high".

Before the test is administered, check that the length of the calibration line is 100 millimeters (3 15/16 inches). If the distance is 100 mm, then the 10 foot testing distance is accurate. If it is different than 100 mm, the testing distance will have to be altered in order to give the proper visual acuity result. See below to adjust the test distance.

The test should be given in good light. The printed eye chart should be placed upright on a wall, and the testing distance should be measured exactly (10 feet, or as determined below). The person taking the test should stand at the testing distance. The person taking the test should cover one eye at a time. The lowest line that can be read correctly is the visual acuity for that eye. Note that since only the 20/20, 20/40, 20/100, and 20/200 lines are represented, a person's visual acuity could fall between the levels represented. (For example, if the 20/40 line could be read, but not the 20/20 line, the vision is at least 20/40, but could also be 20/30 or 20/25.)

When testing children, make sure that the covered eye is truly covered. Since peeking through fingers is possible, it is more reliable to place an opaque object over the eye that is not being tested. For variation, the chart can be turned upside-down, or sideways.

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Adjusting the Test Distance

If the Calibration Line is not 100 millimeters:

The distance that one should stand in inches from the test chart can be calculated by multiplying the length of the calibration line in millimeters by 1.2:
Test Distance in Inches = Calibration Line Length in Millimeters X 1.2
Thus, if the calibration line is 100 mm, then the person taking the test
should
stand 100 mm X 1.2 = 120 inches, or 10 feet, from the chart..

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Amsler Grid - printable

The Amsler Grid is useful for monitoring the function of the macula, or the central area of vision. Certain disorders, such as macular degeneration, can lead to distortion of the retina due to hemorrhage or swelling. This leads to distortion of the visual image perceived by that area of the retina (much like camera film that is wrinkled in the camera will give a distorted photograph). In many cases, a person can monitor their vision with an Amsler Grid to check for distortion, blind spots, or changes in previously existing abnormalities. Some conditions that are monitored with an Amsler Grid include:

Age-related Macular Degeneration (ARMD)
Drusen (deposits) present in the macula
Ocular Histoplasmosis Syndrome (OHS or POHS)
High Myopia (nearsightedness) with retinal degeneration
Plaquenil
(hydroxychloroquine) or Chloroquine use (a drug used for rheumatoid conditions)
Central Serous Choroidopathy
Cystoid Macular Edema

VIEW and PRINT the Amsler Grid.

To use the grid, place it in a visible location with good lighting, such as on the refrigerator. With one's normal glasses correction for reading (reading glasses or bifocals if needed), view the grid, one eye at a time, at normal reading distance. Look at the central dot. As the dot is visualized, and without moving the eye, note whether or not there is any distortion or breaks in the lines of the grid. Also note if the dot, part of the dot, or if any of the lines disappear. Blurred or double images might not necessarily be abnormal. The use of progressive, lineless bifocals may introduce some distortion in the grid. After one eye is checked, check the other. The whole process may take only 10 seconds. Check the grid monthly, or as often as recommended by the treating physician.

THE KEY is if you notice distortion in your grid at the same time as your examination, you will treat that as your baseline. Make a copy of the grid, draw as best as you can what you see and date it. If you see any changes later, you can look at the original to make sure there are changes. If it has really changed, you need to let us know.

If a change is noted on the Amsler Grid, such as new distortion or blind spots (click to see an example of an Amsler grid change), notify the us immediately.


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Color Vision Test

Approximately 8% of males and less than 1% of females are born with an inherited type of color blindness, known as "red - green" color blindness. In this disorder, there may be confusion in distinguishing certain hues from one another. For example, certain reds, browns, olives and golds may be confused. However, pure red would be easily distinguished from pure green, in this particular type of color blindness. There are many varieties and degrees of color blindness, and this color vision test only pertains to the most common type, the inherited red - green type of color blindness. This test may not be accurate due to the wide variety in the ways colors are displayed on different monitors and with different internet browsers. Certainly, it would be doubtful that a printer would display the colors correctly, so it is not recommended to print the test to take it. An individual's eye care provider can test color vision most accurately.

When taking this color vision test, look for a number in each figure. Observe the computer monitor at a normal distance and with glasses, if necessary. The eyes can be tested separately, or together. After taking the test, return to this page to see the answers displayed.

View the Color Vision Test.

Note: This tests consists of 7 images ranging from 25K to 53K each, so there may be a moderate download time.
Missing a few of the numbers may be normal, but missing the majority of the numbers may indicate a color vision abnormality.

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