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Useful tools

Amsler Grid Test

  • Download the white or black Amsler grid (the choice of color is irrelevant to the test result). You can print it or view it on a computer screen at 100% size.
  • Place yourself 60 cm from the grid.
  • Do not remove your glasses or contact lenses if you normally
    wear them.
  • Cover one eye and focus on the dot at the centre of the grid.
  • If the lines around the dot appear wavy, distorted or blurred at
    any point, your macula may be a ected and you should see
    your ophthalmologist without further delay.
  • Repeat the process with the other eye.
Rejilla Amsler blanca
Download white Amsler grid
Rejilla Amsler negra
Download black Amsler grid

OSDI Test – Dry Eye

The OSDI (Ocular Surface Disease Index®) Test is a diagnostic test that helps classify and measure the severity of dry eye syndrome based on its symptoms.

  • Download and print the OSDI Test in pdf.
  • Answer the following questions by selecting the box with the score that best defines the frequency of your symptoms.
  • Add up and note down the results of each block of questions (1, 2 and 3).
  • Add up the results and note them down in the “Total” box.
  • Note down the total number of answers you have responded (not counting those marked “Not known”).
  • The formula for calculating the OSDI is “Total x 25 / Total number of answers”.

Remember that, if you have symptoms of dry eye, you should consult an ophthalmologist for a check-up.

Perform OSDI Test online
Download OSDI Test