Important

 

The following eye tests are for your interest and are not an accurate measure of your visual health. The results are not scientific so if you are unsure about your eyesight please consult with a Sieff Optometrist as soon as possible.

Test Your Visual Acuity

 

Take 3 large steps back from your computer screen (approximately 3 meters). Close your left eye and read the numbers on the chart with your right eye. Repeat step 2 by reading the numbers with your left eye.

If you have trouble reading any of the numbers above, make an appointment with a Sieff Optometrist for a professional examination, which will include testing for other eye disorders such as Glaucoma.

 

If you did not have trouble, it does not necessarily mean that there is a lack of refractive error or disorder, especially if you are over 40. It’s important to have your eyes checked regularly.

Colour Vision Test

 

What numbers do you see revealed in the patterns of dots to the right?

If you have trouble reading any of the coloured numbers in the circles to the right, you may have a colour vision disorder. Make an appointment with a Sieff Optometrist for a comprehensive examination.

Test 1 For Astigmatism

 

This test will give you an overall indication of your visual health.

  1. Sit at a comfortable reading distance from the screen and cover your left eye. 

  2. Focus your right eye on the centre dot. All four corners of the square should be visible without removing your gaze from the centre dot. All the lines should appear straight and continuous and the squares should be uniform in size. 

  3. Repeat the test with the other eye.

You need to contact a Sieff Optometrist if you see the following:

 

  • Lines appear wavy, interrupted or missing 

  • Colours other than black and white appear 

  • Squares appear unequal in size

  • Holes or spaces in the grid 

 

Don’t worry if you happen to see intermittent white dots at the line intersections. This is a normal optical illusion. And if you did not have any trouble, it does not necessarily mean that you do not have refractive error or disorder.

 

It’s important to have your eyes checked regularly, especially if you are over 40.

Test 2 For Astigmatism 

 

If some areas of the image appear lighter or blurrier than other areas, you may have astigmatism. Contact your Sieff Optometrist for a full examination to determine whether you need glasses.

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