Online vision test by Carl Zeiss specialists

It seems that the habr audience, who spends most of his time behind the monitor screen, will find this service useful, which the experts prepared for the centenary of the Carl Zeiss company.

I must say that the test is not quite familiar - you do not need to look at the remote board and call the letters. Also, the authors are asked to treat with understanding that such a test does not replace the real visit to the ophthalmologist, but it may well serve as a real, albeit rather approximate, assessment of visual acuity (Visual Acuity Check), its contrast, as well as the ability to distinguish colors.

Before you begin testing, it is suggested that you calibrate the monitor for resolution and color and be in the correct position.
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The test itself is here .