Contrary to most other vision tests, Reading Navigator -test is designed so that you can choose the viewing distance to adapt the viewing situation. The person might have his glasses a little bit out of date and because of that he can no longer see clearly to 30-40 cm distances. In that case with Reading Navigator you can measure reading acuity separately with viewing distances of 40 cm and e.g. 63 cm. If reading acuity is poorer with shorter distance, you easily deduce that glasses are not fit for the shorter distance and it might be a good suggestion to have new pair of glasses.

Reading Navigator -test can be used from the viewing distances of:

  • 20 cm, 25 cm, 32 cm, 40 cm, 50 cm, 63 cm, 79 cm, 1.0 m, 1.3 m, 1.6 m, 2.0 m

Distances and text sizes correspond each other

In Reading Navigator -test the steps in viewing distances and text size correspond each other. Thus, when you are reading one text size of Reading Navigator –test from one viewing distance, and you go further back to next viewing distance (e.g. first viewing distance 40 cm and then 50 cm), the next bigger text size is seen by persons eye at exactly the same angular size. This feature makes it possible to fine tune the viewing distance to fit persons reading habits and the power of the glasses in order to see the text fully focused and clearly and to measure the persons ability to read without interference of outdated glasses.


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