Online Eye Screening
To assess if you are nearsighted and need glasses for distance please stand approximately 6 feet from your computer screen and remove any glasses that you may be currently wearing.
- Cover your left eye and read as many of the rows of letters below as possible, writing the answers as you proceed
- Cover your right eye and read as many of the rows of the letters below as possible, writing the answers as you proceed
- Using both eyes read as many of the rows of letters below as possible, writing the answers as you proceed
If you were able to read all of the letters above you have 20/20 vision, however you may still need glasses for optimal acuity. If you missed any of the letters in this test, it may be an indication you would fail a driver's license eye examination and therefore need glasses for driving.
Also, if you can see "clearly" in the distance but you experience fatigue, pain, double vision, tearing or any unusual symptoms may be indicative of refractive problems. One such problem may be astigmatism.
The test you are about to take should help you pinpoint the reading magnification that you need. Please note that this test assumes that you have 20/20 distance vision.
To assess if you have astigmatism, please take this test while seated at your computer. The purpose of this test is to determine if all the spokes on the wheel are equally black using the figure below.
- Cover your left eye and stare at the figure below noting the lines connecting 1, 3, 5, 7, 9 and 11.
- Try to determine if any part of the line appears darker and/or blacker. If the answer is yes you may have astigmatism.
- Cover your right eye and repeat steps 1 and 2.
Astigmatism is a refractive problem, which is corrective with glasses or contact lenses, and generally causes some blur more in one direction than the others. It can also be the cause of headaches and eye fatigue. Again this is a rough test and you may have astigmatism even if the lines appear equally black. Conversely, you may not have astigmatism if the lines appeared unequally black. Please make an appointment for a professional eye exam to be sure.
This is a quick test you can take that may reveal an eye health problem. For this test you should wear your reading glasses (if you have them) and stay seated at your computer.
While looking at the following grid, please ask yourself the following questions:
- Do you see the black spot in the center of the chart?
- Keeping your gaze fixed upon the black spot in the center, can you see all four sides of the square?
- Keeping your gaze fixed upon the black spot in the center, can you see all of the lines within the square? Are there interruptions, holes, spots or blurriness?
- Keeping your gaze fixed upon the black spot in the center, are all of the lines perfectly horizontal and vertical? Is every square equal in size?
- Keeping your gaze fixed upon the black spot in the center can you see any movements of certain lines or vibrating lines?
This is a good test to perform on a regular basis. Notify your doctor immediately if you had any unusual responses to this test. For anyone who has been diagnosed with a retinal or macular problem, this test should be performed daily to note any changes in your perception of the grid.